Looks great, Mike. If it were me, I'd probably remove the filler unless you know for sure what's under it. It could be perfectly fine, but for a patch that small, I'd grind it out, maybe dolly it a little better, then spray the area with self etch and redo the filler as needed.
I know what you're saying about too hot to work. The guy doing my paint work has slowed to a crawl. Went by there Friday to pick up a piece I wanted to work on this weekend and the place was dark. I figure everyone took off, what with the temps near 100 these last few days. Although I'll admit I prefer sweating over freezing.
