The Mesa can handle cabs of 8, 4 or 2 ohms, you just use the right speaker output socket (there are 3 pairs). The Acoustic is probably just a pair of sockets and you plug into either.
You seem to have a choice, both very good amps. I'll pm you my mobile and we can have a chat if you like.
I do warn you, you'll probably want to ditch the TC and buy one of either after the lend!!!!