Keep in mind that while there are still four main locations that you're likely to end up especially as a new accession, there is some variety in what you might do.
You may end up at an agency job, doing a cyber gig somewhere (which is becoming increasingly an option for new accessions), or potentially get sent to the FIOC (Fleet Information Operations Center) as either a deployer (direct support) or as a permanent watch stander. If you're interested in going direct support and getting your tactical tour out of the way early, I'd make that known to your detailer sooner rather than later. Note, if you wanted to do direct support subsurface, you would not have the option to go to all of the big four locations, and the same applies to surface (and air sometimes).
Texas is the smallest of the big four I think in terms of overall billets, so the likelihood of you going there would probably correspond with that. Hawaii and Maryland are the biggest, so I think there's a good chance you'd end up at either one of those two sites. Keep in mind that where the others report to one O6 for administrative purposes, Maryland is now split up into 7 smaller commands (1x ISIC and 6x subordinate commands).
When I was at OCS in 2015, I communicated with the detailer that Hawaii was my top choice based on what I knew about weather, location, and housing allowance rates

You'll definitely get the opportunity to communicate with the detailer about preferences at some point, so I'd research that carefully (I'm always happy to discuss more, too) prior to attending OCS.