Sounds like a good list, Nikos, and happily an attainable one I would imagine. I'd eventually like to find both ASM 20 and Detective 400 as well, though if they're grails for you then I'm guessing you're looking for higher grades than I am. Do you have a target grade range for each?
I'm about 80% done with my SA Spidey run, but ASM 20 is one of the odd issues that always eludes me. I've found that the light green cover tends to look kind of cruddy or tanned on most copies in the VG range, and I haven't found a 20 with quite the balance of eye appeal (high) and price (cheep!) that I'm looking for. So, always on the lookout. Best of luck on your list!