Old hops for sour

[nman13]

Forgot to order hops and brewing my first sour tomorrow. Found some old cascade hops in the fridge (~1.5 years old if I had to guess) that were open and in a ziplock bag, 4.9% AA. I know aged hops are traditionally used in sours. Thoughts on what to do? Not near any LHBS. Any best guesses on what the AA for these hops is at now?

 

[RPh_Guy]

Cross-posted: https://www.homebrewtalk.com/forum/threads/old-hops.658863/#post-8451649