As long as they are on the same invoice, you can pack them together, Send to CCS first and passed on to CGC for grading
Only problem I had was, I had a handful of $300-$500 books and one that was worth around $3k, so the 3k book got express grading and the others took a bit longer, the $3k got sent back to me on its own and the others turned up a few weeks later
I asked could they all be shipped back to me together as one package but I was told no, so best to enquire about that question as things may have changed since I did it last.