If you're thinking of paying off $200k, you'll need about $35k per year to put toward the mortgage balance. If you have a large down payment, you can subtract that off the house price and then divide by about 5. For taxes and insurance you'll set aside another 3% of the sales price roughly every year.
Condos and townhouses have the advantage that you don't have to maintain the exterior. Most HOAs take care of exterior painting, roof and landscaping out front, including lawn. Landscaping inside your fence might have to be taken care of by you, but the outside will be less hassle than a single-family homes.
Now you do pay for that outside service and you lose some say in how things look, but for some people the headache of mowing or having someone trim bushes etc is something they don't want to deal with.
Single-family homes can be your canvas to create a landscape of your choosing. You won't have to share a common wall with a neighbor. Some single-family communities do have HOAs, too, though, and their function is not to do the exterior maintenance, but to make sure you do.
As to Grapevine-Colleyville ISD has 11 elementary schools, 2 of which are recognized and 9 are exemplary. It also has 4 middle schools, 1 acceptable, 2 recognized, and 1 exemplary. The 2 high schools are acceptable and recognized, 1 of each. You can find out more at http://ritter.tea.state.tx.us/perfreport/account/2010/distri and type in Grapevine.