RE: Rubber Bands or Bolts?
I don't think this matters that much, and as other guys already said: you will be able to do aerobatics on any plane.
It's up to you to decide but either one will be just fine...
Converting "rubber band" wings to bolted ones... it can be done and it's relatively easy, but I would suggest that you need to gain some experience building airplanes (at least from kits) and then "the sky is limit".