As far as mold goes, better off if it IS cold in there. I doubt there is a mold problem yet, but how the restoration process happens is critical. First thing I would do is tent off bathrooms with tubs an showers and demo surrounds and floors, bag it all up and get it out. There is alway existing mold there. Id do this before heat is put to buillding. Once all areas where mold is typically found are demo'd and cleaned up, I would demo the remaining flooring and open all the walls. Best if this can be done before heat is restored as well. Heat will begin the growth and being forced air, spores will circulate and take up residence in all the cozy moist areas. If existing mold is contained right off the bat, and then blowers and hogdog dehumidifiers put to work, you should be ok.
If the substrate is decent you shouldnt have slab problems. Youre in luck if there are gutters on both sides and not alot of large trees close by. Without gutters, run off can fill drain tile etc over time with sediment and your flood water would have better chance of backing up under slab. The little that might make it thru shouldnt pose a problem. Utilities should be ok as long as water supply doesnt freeze. Being on a hillside would kinda give me a warm and fuzzy, sorta.
Alot of coulds, cans, mights, and shoulds, with a kinda and a sorta thrown in for good measure. If you hear the same guarded optimism from a local contractor, it shouldnt be too bad, maybe! :c)
One more thang... Dormant mold spores already exist in framing members, etc. Thats why it is key to get it heating and drying out at the same time and as quickly as possible. I wouldnt skimp on the commercial high capacity dehumidifiers. Its amazing how fast they can suck the moisture out. Early on youll about have to stand there at the ready to empty them(if not connected to a drain that is.)
Workin on shtupf from my recliner sure is easy! Dont know why I didnt figure that out sooner!