Yep, that's the one with the slightly tapered wings.
For the 40 I'd say you probably want to size it up to 800'ish sq inches. That should come out at around 45 inch span I would say for a 125% enlargment. The stock 25 size version is 36 inches and 521 sq in area so 520 x 1.25 x 1.25 =812 sq inches. Perfect......
The fuselage will be about 11 to 12 inches deep....
The wings will scale up and use the original size wood just fine. But the fuselage may need a little help in the structure department. Check out some of the build threads in the Profile forum and ask for some more direct help there. Those guys know there profiles and can help a lot.