Don’t let your anxiety drive your decisions. Let those with the wisdom of life experience and Torah guide you and your choices.
I think, like with your “criteria” list of what kind of girl you’re going to want, you need to prioritize what are musts within yourself before dating vs which are merely preferences. This is not something you need to be or should be doing now.
Step 1) Deal with the Gairus status
Step 2) find a yeshiva you can learn and grow in. Ask the rabbonim after they know you well how long they recommend you stay
Step 3) discuss shidduchim with rabbonim and career goals. Ask them for their advice what they think you need to do to prepare.