176 with CSL is priority #2.
175 with CSL is priority #4.
This means a state sponsor application will be processed before a 175 application. If you don't care that with the state sponsorship that you have to stay in that state for 2 years then go ahead and do that. It will be a little quicker. Either way you are in a good situation as you are CSL, which means you will have less of a wait than the rest of us.