So I finally decided to purchase a plane and I have a few questions. I found this forum after I made my purchase so this is what I have on the way.

Tower Hobbies Trainer .40 MkII
O.S. Max .46AX ABL
Futaba 6EX 6-Channel 2.4GHz/4 S3001 Servos
Misc Req'd Items (prop, servo extension, field box combo etc.)
RealFlight G4

After reading through this forum I found a post (don't have a link) in which someone stated that the 46AX was too heavy for the tower trainer. The AX weighs 17.2oz and the LA 13.6oz. Assuming the plane is balanced correctly is this going to be an issue? Should I consider another engine to start with and save the AX for a second plane?

The radio was offered with S3001 or S3004 servos, what is the difference? (i ordered the S3001, hope its right!)

Will the 6EX be able to link with non spread spectrum Futabas?

I'm sure I'll have many more questions once all this arrives but that is all for now, thanks in advance for any assistance.