Oh btw, for the throttle control rod you might consider using a flexible bowden cable/ This would give you better allowance for the throttle servo location and you could lead the cable directly adjacent to the fuselage floor if necessary.

Also, it might help making a 1:1 cardboard mockup of your fuse profile and positioning battery, servos, tank, bellcranks ect. accordingly so you can 'optimize' the location for each component prior to its actual installation.

Hope I could be of some help/
Oh and pls post some more pics as you progress with your construction, I'd be very interested[8D]

cheers,

Trev