I've got a couple of question about putting one of these together.

What size servo arms 1-1/4 or 1-1/2 Most likely IMAC only no 3D or very little
What size rudder bell crank for pull pull and is it straight or offset and do the cables cross
Will a DA-150 be plenty or should I step up for a 170 (probably going to use Grieves pipes)
Thanks
Bill