If we could convince Dallas to do a straight Bass S&T for Terry that would be fantastic. The math would probably work too. Bass' last deal was 4.25m, so as long as we timed the trade before we went over the tax threshold we could get 150% +1K back (6.475M). That would easily accommodate Terry's 5M.
Then we could go back after Camby. To put it plainly, while Bass is the better and younger player, Camby is a better fit based on what he can bring to the game. Camby is flat out better at defense and rebounding. Also allows KG to be the PF again and would allow Green more time there as well, which would help allow Allen, Terry & Bradley to see appropriate minutes.