As a starting point, possibly the SIG Citabria plans? I am not finding anything else that looks an appropriate size. This kit would likely not be an easy conversion building it balsa as it comes in at around 7 lbs, lol.
I've scratch built my first design off a three view combined with an old balsa plan and it worked fine! I think if you match the model size and power pack to a known successful flyer you should be in good shape. Good luck!
I don't know if you're using the software that many of the designers on here use, or hashing it out "old-school," but what I've done on the two occasions I've worked on a wing design, is to draw out the wing top-to-bottom profile on paper in the size I want it, and use that to get an idea for the measurements I need. In both cases, I made a mock-up of the profile, working out as basically a 1 inch section of the wing, and then make the full wing using what I found in that.
If I do much more designing, I'll have to look into the design software that others use. Right now, the money and the time to get the software, and get up to speed on it, is significantly greater than the money and time I spend working out the design the old fashioned way.