However, there were better candidates than the latest two people you've chosen in my opinion. For example, Roboabhishek and pereira4 have a better posting history than the two guys you've pick, which only post on the meta section and barely talk about bitcoin.... just my observation.
Well this is where it comes down to personal opinion and is completely subjective. In my opinion I don't think Roboabhishek's are better than those two chosen (not a diss against him as his posts are good), and pereira4's are certainly very good and deserved a shortlist place, but only two slots can be filled ultimately. I don't think posting in Meta is bad either and it's one of the allowed boards as per the rules in the op so I think that should be fine.