recomending APC 12.25x3.75 for a trainer come on guys!

I agree its a great prop and use it alot on my 46FX and the best performer for it. but not for a trainer
Why he should put a $4-5 prop on a trainer that he is going to break in the first or second landing.

You are good with your list I would buy it before someone tries to put a DA-50 in it

You don't have to buy everything right now, you ceratinly don't need incedence meter for a ARF tariner, it will fly anyway and you won't be able to tell the difference plus it is a rubber banded wing incidence will be different evreytime you mount the wing.

Just fly your airplane, there is to much to learn and to buy but burn several gallons of fuel and have fun. oh btw I assume you are getting help from an instructor, you sound like an intelligent guy.