Finished putting my ARF Avistar together. MY first build EVER! I think it went pretty well and I'm hopeful that it'll fly

. I still have not measured my throws yet.
I have a few questions though.
1) My CG is at 1.5" with this setup. Very nose heavy with OS .46AX, What is the best way to add weight to the VERY back?
2) When I have my charge port plugged in, the light on the receiver (AR6200) come on slightly and it sounds like servos are getting power, but the charge light is lit on the power adapter and switch is in OFF position.
3) I was at 1.25 turns out on the needle on my OS.46AX and it was stilling spewing oil all over my wing. normal? Fuel is OMEGA 15%. after running, lot of oil drips out of the exhaust when I tip it.
4) What is the optimum RPM range I need to shoot for with a 10x6 or 11x6 propeller?
5) I'm also confused on the hinge gaps.... should there be any? None? Little? I have little gap, nothing huge but noticeable. Is it ok on a trainer?
6) the gas tank is fitted right behind the engine in a very tight cavity... there is no way to wrap foam around it..... is this ok? It is very rightly fit in there.
7) Anything abnormal with my setup in pictures?
8) Can you lend me $5?
Note: The propeller is beat up I know, It's not the one I'll be using.
TIA