Had we not lost Khalifa and Chandler I would think we stood a chance of making a run in the NCAA tourney. But we probably need to add another piece or two (at least another wing player to help offset the loss of Chandler and Robinson) at this point in order to make that a reasonable expectation.
Also, he's not on your list, but Trey Stewart is also a Junior as well, right? He may not be as big of a piece as those you listed, but he should provide some depth at PG behind Hall and possibly Baker.