RE: TOC CAP 21
In that case you should have a look at the site of a small German manufacturer with direct marketing, even though it's only in German and not very user-friendly (the website). This [link=http://www.rc-tronics-topp-rippin.de/]shop[/link] offers CAP 21 models in three different scales, the smallest of which might fit your needs. They even have a Laser 200 in three scales, a Super Star, and other interesting models. I don't know much about them, but some people here say they are good flyers.
Please drop down the list on top of the page and select "Motorflugzeuge" (instead of "Home" ). Now select "Motorflugzeuge" (instead of "Rubrik wählen!" ) again in the second drop-down list that appears now. You will see the three CAP 21 models and may select one to see some specifications. What you'd get is a G/F fuse with cowl in white color, wing and stab CNC-cut foam cores sheeted with obechi (I suppose) veneer (as usual here), landing gear, and linkage parts. The model/type is said to have a belly pitch (due to low wing and high stab) that may be mixed out. Don't forget to scroll down the shop page to see the Laser, Super Star, Chipmunk, and other nice models. And they sell parts like the canopies as well!
By the way, Toni Clark has a [link=http://www.toni-clark.com/deutsch/modelle/cap21/cap_hist.htm]CAP 21 history page[/link] at his website. It's translated from the ultimate French book about the CAP airplanes, but it's translated only to German (strange enough).
And for a wing airfoil you might consider Eppler E 168 (or 169) which has the flat rear part but a more "conventional" nose part than the original (which was a French airfoil similar to other aerobatic airfoils) and was designed for aerobatic models.