The DLE 35 should work out great with that prop combination. As far as the weight distribution I think you'll find that with the extended nose on the fuselage, engine, tank, ignition, ignition batt., nose gear...etc.; that you'll have plenty of weight up front to counter the longer tail section weight. I have the 6374 electric motor, + mount and a 120HV ESC + mount, nose gear, etc. up front and the CG is right about on the money with the 2 big 5,000Mah 6S packs moved slightly rearward, but pretty close to being right over the CG.
It becomes a trial type thing though...add your servo's, batt.s etc. and check the CG. I actually had mine on the CG scale and with most of the fixed items mounted and then started moving other things around until I was really close.
Anyway have fun with it...the aircraft is beautiful...you'll have a little tweaking to do here and there on this ARF, but its all worth it in the end.
I just got my V2.5 gear replacement in mine last weekend....but still have not flown it yet. Hopefully this weekend...
Let us know if you run into problems...etc.