Well, of course, planning on a complete outfitting. I was thinking of a YS91 for the power w/pipe + spring air on the retracts. I'll mount sideways with the pipe running the the pipe tunnel (like (I've done my my other Tipo - see my pics in my gallery). I've had the 91 sitting around for a while without a good home - this seems like a good home to me. Right now the airframe weighs all of around 3 pounds. So, I think the the 91 and all up it should come in at around 8 pounds or so. My 61 powered Tipo w/pipe - tips the scale at 8 lb/14 oz.