Had the same situation with my deck about 2 years ago.
Pulled all the decking off and pressure washed the joists - they were in great shape except for the ends that were in hangers connected to the ledger. Pressure washer blew through the rot and I could see I needed to replace them all.
Sucked that it was just the last 1-2" of board that ruined it.

We had to wait 10 weeks for windows this summer.
Nothing crazy, just white vinyl double-hung.
It was almost 12 weeks for our siding to come in too.
Again, nothing crazy or custom, just a dark grey dutch lap.