Thanks for all the suggestions everyone. Some interesting stuff there - I had previously considered pulling the head out of the TE combo and racking it, but its an awesome amp and its a shame to knacker it - but I could still be tempted...
Also yeah I noticed the MBC115 was 32Kg - which is still 15Kg lighter than my Trace - but yes I agree its probably still going to be a struggle in the long term.
I'll take a look at the cabs you guys mentioned and see what fits my budget, but once again thanks for all your suggestions
Cheers
Sean