This plane needs everything shoved up front.
I mounted my battery on the engine mount (well protected in foam )
the throttle servo mounted on the fire wall and managed to keep the
weight down to 3000g.
It,s a real floater at idle& when coming in dead stick, have spoilerons
programed in but as yet have not used them for a landing.
I only have a 56 4 stroke so it can fly well on a smaller engine if you set it up
right (light !! )