Dont think, probably Oda will send just the SSG and VA and make Mihawk defeat them, and them run for the NW to hide under Shanks umbrella, if they have send Kizaru how Mihawk would fight Zoro if he were send to Impel Down. If he go to the NW hide with Shanks, then we can have Luffy meeting Shanks, Zoro meeting Mihawk and Ussop meeting Yassop in the same arc, and after this, the SH will be ready to sail to Raftel as one of the top three crews in the world together with BB Pirates and Red Hair Pirates.
Why people say Fuji was send after Boa?there are Sea King in all parts of the GL not just in the Calm Belt.