get rid of the MG cab, really crappy cabs, i used to have a MG half stack and in the process of upgrading, i upgraded the cab first to a marshall 1960B cab, and before i could afford a mesa recto i was still using the MG head and i was supirsed just the better speakers in the cab alone made the MG head sound WAYY better.
So yea get rid of that cab, i would reccomend marshall cabs for all around music, Mesa cabs are great too, If your up for carrying them Vader cabs are like THE metal cab people are using