For what you seem to want to do.......live steaming........a DAW might not really be your answer.....especially if you want to adjust on the fly. I'm assuming your budget is keeping you from getting a small digital mixer. Ebay or the like should offer used small mixers with all the effects you've already mentioned.......at a pretty low price. Of course.......you'd need one that accepts a USB mic.
yeah, i found that reaper adds a strange delay to my audio sadly. i had a quick look at the mixers suggested but not sure they will do everything id like