ORIGINAL: ocelot31454
The Wing span is 35 1/4 and the fuselage is 25 5/8 long and 2 1/2 at the widest point. As for weight I haven't weighed all the servos (4, 1 standard and 3 Micro), the battery and fuel tank. Tank holds 2 1/2 oz I believe. Guessing I'm gonna say between 3-5 lbs when complete including the silkspan and finish.
3-5lb? I don't think so..
The .074 is a logical choice, as it is lightweight and has good power. And throttles. If you must use four channels ditch the standard servo, that's almost an ounce right there, aka 4-5% of the projected dry weight. Use servos along the lines of HS-65's, a lightweight receiver, and what do you have in mind for the Rx battery? 2.5 oz is a big tank - what kind of tank is this, I am not familiar with a 2.5oz size?
If you are going to get much over 24-25oz, start shedding options IMHO.