Nice job, i certainly agree with the strap comments and I know that it's contrary to most here, but I like the flap without stitching, a simple crease would finish it nicely.
I use 1 and 3, depending on the application. 3 for molded cases, 1 for pretty much everything else. Suggest you refer to Al Stohlman's: the Art of Making Cases Volume 2 for handle construction and finishing.