I would suggest heading south that time of year which would keep you in Texas. The Hill Country is what I'm familiar with and there are too many great riding routes to list them all in one post. Here's some destinations, the routes to and from are all great...
Llano
Mason
Enchanted Rock
Fredericksburg
Luckenbach
Kerrville
Medina
Utopia
Leakey
Camp Wood
Garner State Park
This is a starter list if you decide to come down this way. And, if you are so inclined, send me a personal message. I'll see if I can get some time off to ride with for a day or two...
Good luck and good riding!
