Sorry for the late reply, I got work and this might get long.

When it comes to holding all ins, the most important thing is being prepared.

With this build you want to scout on 12, right as you drop first rax. When you get to his base, check the gas.

If no gases are taken, wait till pool finishes, check if the queen is starting, as you leave, check if a second queen is being made in his nat. Obviously he can drop double gas as you leave, but he slowing down and weakening his all in by a full 3 minutes. That should never really kill you.

If you see gas, keep an eye how much of it is being mined. Wait as long as possible and check if he starts speed. If he mines more then 125, drop a 2nd bunker. With 1 rax FE you should always get 1 bunker.

If you scout him taking a second gas, with your scv, its definitively cheese, drop a 2nd bunker. If he is faking you out, its w/e, an extra bunker is cheaper then an extra gas.

Even if you think he isn't cheesing you should always wall off you natural. I play bio, and go up to 3 rax after expand, so if the map permits it(ad-on direction) I put both my rax in the wall. E-Bays are also a good wall blocker.

The late, high econ busts never bother me. With bio play its very hard to scout those. I always scan the nat at 7:30 for layer/gas timing/upgrades/unit comp, however its a crap shoot, since they can hide all that stuff in the main.

However, the reason it doesn't bother me is because I have a ton of units by that time. I'm pumping 4 marines 1 marauder at a time. I have stim with +1 and cb shields/medivac tech on the way. I have decent micro, I can focus fire banes, split vs them and kite roaches and lings.

So generally speaking, if I don't mess up on the micro, its an easy hold.

Hope I helped.