get some totes, have plenty of extra powerheads and some heaters, extra water pre made, some towels and have the other half away for half the day. hahaha
this is what i did for my 125 when i broke it down about a week or so ago.
i got three 32g totes from Kmart, one very large tote, and a spare 55g tank.
tote 1:
All sand and some water, with powerhead and heater
tote 2:
All sand, rubble rock, water, and macro from fuge with powerhead and heater
Large tote:
All live rock from DT, water, heater, powerheads,
55g tank:
all extra water that was drained from DT, with heater and powerheads.
i put all fish and coral in a frag tank i had set up.
hope this helped.