Congratulations on all your acceptances and even on being considered for those two full rides. That says a lot about your accomplishments!
You’ve gotten some good advice already. You’re just in the really icky time of year when you just have to wait. And the U. of Maryland is an excellent university that you’re fortunate to have as your in-state flagship, making it an even better bargain.
No matter where you go, I am confident you will do well. Best of luck to you!