the middle 50% for UMD-CP in 2016 was 1260-1420, so you should have a decent shot there with a 1400 and a 4.00 GPA. Getting above the 75%tile will help your chances.
You may want to look at some other MD publics: St Mary’s (the public honors college), Towson, UMBC - they could be more likely for admission and possibly affordable.
As for matches, you have a huge selection of schools really, with your stats… what else is important to you? is affordability a priority? location?
Also, Most people here will tell you to find your “safety” school first and build up from there…
re: SAT/ACT: from my D’s experience, ACT requires quick reading comprehension skills to get a high score. need to process the readings quickly. If that is something you excel at, try a practice test and see how it goes.