First of all see:
http://www.youtube.com/watch?v=OiJA4rXm-2w
Single prop on the nose...the others are scale and free-wheel.
Then:
http://www.youtube.com/watch?v=Zh-UMsR1uf0
Now, this is a B-24, with 4 rubber motors... There's a Guillows kit of this ship. However, the one in the video was scratch built.
Bottom line is these are very complicated projects. Ultimately doable, don't get me wrong. But you might be well advised to practice on a few projects that are "less grand," before tackling a 4 nacelle build. Besides, I promise that if you make a single prop plane fly a big circle in the sky, your Dad will flip! Mine did, as he taught me how to build these things. He's nearly 80 and I'm 50 something...
*G*
bp