Index is a scumbag mountain at this time of year (the standard route). It is still hands down one of the worst routes I've ever done. Makes Luna Peak seem friendly.
Anyways, Mount Daniel is a good choice.
So is Fortress and Chiwawa Mountain. I would suggest the Enchantments but last I heard they were all up in flames (smoke). Are you looking for overnight trips? I can suggest some fun multi day trips.