I have a H-9 Cap with a DA-100,plenty plenty power.Hovers at less than 1/4 throttle.I also have an AW Edge 540T with a DA-100 and it is also plenty power.The Cap weighs right at 26lbs and the Edge right under 27lbs.Both are awesome 3D planes,I don't fly IMAC so I can't comment on that.I am assembling an AW Extra 330L now and after reading how satisifed Wayne is with his ZDZ(I think ZDZ pays him advertising fees,LOL) we decided to go with the ZDZ 80 single,I am hoping to come in under 23lbs.This is my first big single and ZDZ experience,so I hope it's a good one.I'll get to see first hand the difference between DA and ZDZ.Mecam,I know you all are no rookies to this stuff,but have you tried everything to get a reasonable cg before adding that weight,No way would I ever add a whole pound of dead weight to a plane,don't take it personal Mecam,JMO.
Mike