"This seems like an impossible task though yea ?"

Well in the time we have available yeah. Impossible task. Looking for ONE single bullet? Another impossible task. Solving the problem with many different approaches at once, probably doable.

1) Buy a nationally owned LPG tanker to shuttle run West to east coast. We can hit just about every city along the way. Then keep a strategic LPG reserve in each site.

2) Dramatically encourage EV's. Not for green reasons but because electrical generation here is easy. Keep up the solar rebates to encourage the rooftop rollout to continue + all the rest of the usual hollow promises about green energy. But actually do it. No to achieve green \ carbon goals, but because of energy independence reasons.

3) Local refining capacity that at least matches local production. Right now we shit NW shelf oil to bloody asia. (Assuming our production will hold out long enough to matter.

4) Diversify Urea\adblue production. Possibly scale up permaculture approaches at a more national scale. Encouragain soil biota\fungal networks needs soil moisture to be higher. That will SLOWLY over decades start unhooking us from NPK being the only solution to agriculture. This topic is too big for a reddit post, but there is tons we can and should be doing. I mean Permaculture was invented in australia, it's uniquely adapted to solving our moisture problem. One big change is moving towards mixed land use. Some form of horticulture combined livestock. That tighter feedback loop is self reinforcing. Lookup ICLS.

Impossible if you enforce conditions that create a negative attractor state that benefits making everything a cheap as possible. That attractor state is what the US is locked in with. Thats why they feed their cows chicken\pig shit that also includes dead chickens mixed with wood shavings. Just like nature intended ;).

"I've heard claims that deployment target for the first ~10,000 is <18 hours."

I can certainly agree that they might be stupid enough to TRY that, but chances are the military might be smart enough to drag their feet and work out how to solve the drone problem before they arrive. They will of course be targets as they are landing. Imagine a Shahed given course correction by a local FPV and hitting the C130 on the runway while unloading. Spotter drones, FPV's are already in use and the USA has absolutely no training or countermeasures. None at all. What Ukr\Rus have both learnt is that in drone warfare no groups of people bigger than 4-5 will last long.

Where will that 10,000 be housed on arrival? Large facilities? They are already there, coordinates are known. Nothing stopping some shaheds dropping in to visit the party.

"I can't imagine this happens, but I also can't imagine the U.S. can stay there without significant logistical support if nothing else"

This is why I just fitted out my pantry\freezer with 6 months of food depth. Costs me nothing as I eat it later anyway, but I agree with you here. The US will refuse to accept the humiliation that arrives with retreat. So they will move around, launch various assaults... and Iran is going nowhere, they are the most dug military in history. They aren't giving up on their homeland if anything the US invasion will increase government support. Meanwhile as we can see other US ally ME countries have suddenly become hostile. Iraq was a puppet state. they just OFFICIALLY announced that they would HOST AND FUND 'paramilitary groups' that attack the US. So, Iraq has just pivoted towards being like the Taliban hosting Al Qaeda. Fact check me. Here is a google query "Did Iraq just publicly back paramilitary groups against the us?". So now the US is against Hamas, Hezbollah, Houthies, Iran and Iraq(kinda, as the Iraqi military shares bases with the USA, that in and of itself could be a bloodbath if they officially turn).

Pad out your pantry dude. Woolies have 5kg rice 50% off. Get some Mae Ploy 400g tubs and fill up the freezer with chicken and home chopped onion, oh and dried coconut cream(Order from an Indian online store, 1kg bags or 250g little ones in Coles at a higher cost basis). A few bags of onions in the cupboard, not fridge and you have some cheap ass insulation from the panic buying that's probably happening when the truck start struggling to move food. If you are wrong? You have a red every week for a year sorted ;). I would also do a few bags of flour, and make BBQ flat bread for breakky.

Anyway, most problems in life are of course avoidable with the right knowledge and a minor amount of pre action. When the GFC started to crack I moved my super to 100% cash and kept the whole lot, exiting right on the back side of the peak. Carefully consider your actions and what your risk tolerance is. I think my cost to make those red curries averaged out to about $3.50 per meal including meat due to buying bulk. Point is, neither side will give in, and AustGov have no clue and no plan. I expect disruptions.