RCU Forums - Best long range FPV / UAV frame???

hey guys I am having alot of problems trying to pick the best plane type to go with for a FPV / UAV. A few thoughts i had was i think it would be a plane with the engine in the rear like a pusher plane so i can put all the equipment in the frontlike the pan / tilt camera. I really want it to be nitro or gas so i can use a big fuel cell and get longer flight time. I was thinking about the skymaster 337 with only the rear engine but im not even sure it will fly with only one. I really like the twin boom desigh. or maybe the MQ-9 reaper with a nitro motor to replace the electric one but again im not sure if the plane is big enough for all of that.
Im sure i have alot of other questions but i can't think of them right now.

if you guys could help me out i would really appreciate it.

thanks
James