Big trainers are fine I am sure but in a crash its big money too and the set up costs a bit. Its your decision, just make sure you know what you want to do with the motor and batts later on. Plan so they can fit other planes. The Hobby Lobby set up on batteries is for the Telemaster, slow with a big prop. If you go lipoly and want to use the same amount of VOLTs then its not going to run well on an aerobatic plane. Just watch out for that.

Why don't you go for a nice 60 sized trainer and covert it to EP. Something like the World Model Super Frontier Senior (something like that), its big and will fly with a smaller set up. I seen them run on glow and its a lovely trainer. You can easily fly her with something like an AXI 4130/16 running on 6S lipoly, this leaves you with an option for any 60/90 sized aerobatic plane or a full fledged 40 sized 3D performance plane in the future.

If you are not going to be an EP freak but want to just enjoy easly flying then go with something like the AXI 4130/20 and you can throw a big prop and just get longer flying times.

With the AXI 5330 set up you are talking about 120 sized aerobatics later on. Covertions are easy ... only issue is battery access and location and how it will balance on the CG.