I should say that I double-checked and the Sweet Sixteen does not have MIDI in, so I was incorrect about MIDI to CV conversion. However, you seem to have that covered already, and this would allow you to go the other way - convert CV to MIDI to control CCs on your other stuff with your modules (might be good for some of the stuff on the TR-8S that's in menus). I just wanted to correct myself and not have you make a decision based on my mistake.
edit: turns out I mentioned MIDI to CV conversion somewhere else. Still good to point out.