@DanTheManOne1, a lot of your questions can be answered by using the handy dandy directory that I put together:
I posted an update when those New Adventures of Superboy issues were added. You can also find where every digitized issue or series that is only available in a collected edition is located (including JSA: All Stars). I strongly encourage everyone to check the directory before making a request in this thread; there’s a good chance that what you want to read has already been digitized.