Check out this older thread with 500+ posts and mods of the ARF version of the STM

http://www.rcuniverse.com/forum/m_35...emaster/tm.htm

I have had three now, all highly modified only one is still flying.

I started with a kit then had two ARF's. If you really want to make room for stuff move the servos to the tail like I did. I can carry several water ballons or about 10 plastic easter eggs with talc power for "bombs". You can search my name and see all the threads I have posted to and mod pictures.

A big word of caution about the build quality of the ARF. It's horrible! Yes it will fly just fine stock but it's only a matter of time before the structure falls apart on you. Trust me on this. All the ribs in my wing were not glued, the tail is very weak and the major formers are glued in with some type of stuff that's not really glue. It's a great design but a horrible ARF.