I do appreciate the support, guys...I was sorta half expecting ridicule instead!
Larry, I test-ran the engine yesterday and there's sure no power concerns, the .061 with a 6x2 really cranks up and pulls. backward prop will probably be the initial arrangement, to control some of that power. short tank certainly.
Tim, I have working drawings I went from, mostly former layouts, no true plans. but if it's successful I'll try to draw up more complete layouts.
I'm pretty sure I'll not be kitting this one though!