Hi @Former-Member Since the Cat will be new to your place (not familiar).
I don't think that it will start climbing your Curtains - They usually do that when it's their own place, & they are "exploring the territory".
Mostly as kittens - Adult Cats seem more settled, & less inclined to climb curtains.
You may be able to confine it to one room - Although my Jelly Cat would not put up with that.
She would start scratching the....out of the door - She shredded the ply wood off the Toilet Door, when she was younger.
Confining the Cat to one room - Would be more to limit/ reduce your allergic reactions to it.
Because the less it wanders around (& spreads fur etc) - the less your allergy may be triggered.
A Bitter-Tasting Deterrent spay (from Pet stores) can be sprayed on things, if it looks like the Cat may scratch or damage them.
The spray should not damage furniture etc.
When Cats get that bitter stuff on their paws, after trying to scratch something (they lick their paws) - They go "Yuk, this tastes awful" & hopefully won't do it again.
Adge