I often ask home owners to e-mail me pictures. I tell them to get the pics and get out, stay out of flight paths. If I were you, I would request pictures. Attics can be tricky. What if you can't access all the combs from within the attic?
If its quite hot in the attic, comb sections may not be easy to handle, especially a new colony. Expect a messy removal.
If all systems are go, place something (plastic, wood, etc...) under the colony so as to catch any combs that may fall.
If you have full access to the comb sections see if you can transfer combs with bees. If top sections are loaded with honey, you may need to cut the combs where the honey ends, then you can remove the top portion.
Best scenario would be if you got the queen, framed usable brood sections and placed the set up as near the hive entrance as possible.
Do this with time to spare to allow the bees to orient to the new set up.
You could also apply a little bee quick to the area to run them out to the new set up.
Hope this helps.