Definitely worthwhile splitting and rehousing the head in a 2U rack case. I've just got my faulty MkV 150 head back after a lengthy stay with the amp tech. It was once part of a 4x10 but now the gremlins have been fixed it sounds fantastic through the various cabs I have. Too many old Trace amps are sat wasted, unused and unloved due to them being part of huge 4x10 combos. Once rehoused it should only weigh the same as most other 2U Trace heads (around 12-14kg). As for the rest of the combo, if you love the sound of it and don't mind the (reduced) weight, chop away!