Chill. Buy the Kadet Senior for your brother. Put any 45-61 into it, you'll be good. Cover it with a film of your choice, like MonoKote. And get one of these http://www.modeltrainstuff.com/NWSL_..._p/53-57-4.htm It will make getting the miter cuts close to perfect. I cut my longer pieces first just in case I screwed up, I could use a botched piece for a shorter one. Also I added diagonals top and bottom on the rear of the fuselage.