Houston area would be a better bet than the D/FW area for forested areas and such, though I wouldn't want to live or work in either. I spent a fair bit of time in Houston when my wife was having radiation after her tumor was removed. I hated it. Rude people(and lots of them), terrible traffic, etc.. D/FW isn't much of an improvement IMO, and you'll have to drive farther to find forested areas. I'd imagine that housing prices are high either way.
Look at Corps of Engineers maps, state public land maps, and national forest maps for a better idea of what is available and where. I know of quite a few areas around here, but few elsewhere.