I recently did my coil recons amid much begging for help on here, so I know how you feel! It was actually quite easy to do. Everything is fairly precision engineered, so there should be no doubt at any stage.
The oil in the lowers is only to lubricate, it doesn’t do any suspension work. Make sure you give the foam rings a good soaking as well.
Make sure you have the kit you need, 24mm sockets, IPA and circlip pliers are not necessarily something everyone has.
Also, when you locate the rods with the bolts to install the lowers, do the non spring side first, the spring side will always push to the bottom of the lower if you accidentally push it on too far before doing the other side!
It is the single most satisfying job I have done on my bike. Good luck.