Would You Use This Timing Cover?

I see only 1 spot where I might remove a little more of the casting. This is to insure my JB Weld is one continuous piece and not separate small pieces. I would definitely rough up any smooth mating surfaces, creates a tooth, insures bond.
In actuality As long as the repair is stronger than the radiator cap, your golden. That's why a gob of RTV wouldn't work for me.