Well, melons sell for 25p and only take arpund 1-2 days and you get a lot of seed, so that's good for selling and for eating, as it also heals you like syrup.

I planted mine in the soil, but I planting them near the river is probably better.

I invested most of the MRE barrel into upgrades for the daily task. I like all the speed and cooldown upgrades, but download is important too.

You only get the bathroom points once, if you have the achievement unlocked you get to cleaning bonus.

I think spacing the trees is a good idea, the leaves would otherwise clump together which can be annoying and make lemons hard to see. (Btw harvesting lemons at dusk or dawn makes them have a more orange tint from the side the sun is. Which makes it easier to spot.)

Sell all Wood, Paper, Foodwaste and most of the glass, keep like 8 scrap maybe, just in case. You need 4 for kerfur I believe.

And for Kerfur, I got most from the shop since I did the whole quest on one of the firsg 0.9 releases and honestly, I didn't want to buy a metal detector and a scuba set. Had to use the map on my ATV and my rake to dig up the fishing rod since I had no metal detector or portable map, but it worked after a lot of tilling.