I have SOOOOOO MUCH information on the SE5a.. !!
Ok, email me everything you've got
I found a few things, but not much in the way of free drawings. Did find a couple though. One from a Russian site and another a German drawing of a captured SE5A. No doubt they were very interested in disecting her.
Your plane looks fantastic. I'm going to get this one looking scale from 20 feet, and if I can get her up and down a dozen times in one piece, THEN I'll start the detailed stuff. I will add little strips of balsa for false wing ribs at the leading edge though before I cover it.