I'd stick with Slabtown down to Ross. Besides, you're in the trophy area. Boiling Spring to Mason Bridge should be fine up river, but personally I've never cared too much for the Mason to Slabtown float. Floated Dogs Bluff to Mineral Springs last June in my canoe with a buddy of mine in back along with another friend who was solo. It's a great float, but I'd hold off until there's more rain.
Baptist down has got to be low now. Issac didn't do much down that way. Hope some of the local guys chime in for ya. As for me, I'm heading to the Jacks Fork saturday morning!