"Looks good, go for it! I put a bunch of holes in new metal putting protection on, basically only cringed on the first 25 or so. You might consider Rustoleim textured black, basically blends with most powder coat, I use it for touching up on mine. If you are going to use rivnuts and need the tool, let me know."
I've got 16 holes - going to use traditional flanged bolt and lock nut (in black phosphate). Will look into the textured paint - hoping tomorrow will work for painting with dry and warm weather.