Thanks for the replies guys. I was looking at all of this again last night. I think this is what I am going to do below...

CSP - Use for specific purchases
Explorer - Shelve once reaching min for rewards then possibly cancel 12M

Sapphire - Have had this card since 2010, change into a Freedom card and use.

This should still keep me at 2/24 with Chase. I also have a BoA card I rarely use and keep around due to it being my oldest card.

After I hit the minimum's for the new CSP and Explorer I will look into my next card, possibly an Ink card.