Two adults, 7yr old and small dog want to get out of TX heat July/Aug. Taking Toyota Corolla, tent and minimal gear. Looking for higher elevations (cooler temps), moderate hiking, swimming, berry picking, organic farms, bike/canoe rentals,occasional access to smaller towns, local library/theatre etc.... Prefer "home base" in one place for a few weeks w. daytripping, rather than moving every few days, so looking for max. 3 areas. Your suggestions? Much appreciated.