Hi Matt,
I've built many .40 size profile models and as Motorman says, you need a motor like the Efilite Power 15 with a Kv of around 920 to 980 and a 4 cell lipo of 2200 to 2500 or even 2650. The 3300 is just adding too much weight. The motor should weigh around 140~150 grams and the magic prop is the APC 11 x 5.5 E prop. I have a very simple nose system for rear mounted motors and this has worked successfully on all of my profile designs. If you need more photo'sand explanations than those below, then just send me a PM with you email address and I will be happy to send you the info.
The pics are from a take-apart profile model that I built a while ago and the basic idea is really easy to implement. The "engine bearers" are 1/16" ply, and the nose doublers were made from hard 1/16" balsa (the R/C type!) and it is strong enough. I have also used 1/16" lite ply as well, but the hard balsa nose is adequate. Electric motors don't vibrate like glow engines! The velcro wraps hold the battery in place and also the esc and timer on the other side. To cover up all the plumbing, I add a cheek cowl. I have used variations of this theme but the basic nose method stays the same. The motor in this model was the E-Max/Arrowind BL 2820.
Keith R