Hi Laura,
Definitely investigate that further. As most are suggesting, it's likely not a 7 hour per day program, and if it is, there must be something more conventional available in a big city like Austin. My rehab was three hours once per week, plus a few separate nutrition or pharmacology, or biology or physiology lectures. The three hours were each a sort of lesson, followed by observed exercise. At the end of each of those there was an 'exercise prescription' given for the following week, based on the heart rate and perceived respiration with a given duration and intensity.
My program was nominally an 8 month program, which I left after 4 months so I could go back to work, far from the rehab center. (I work on a boat actually, so far from home, too.) At that point, they actually had a correspondence program where I filed my exercise diaries via email, and they gave me my new 'prescription' based on what I reported.
I couldn't praise the program enough for the discipline and motivation it instilled in me. Even now, I go back annually for a cardiac assessment - a treadmill workout with ECG and VO2 max respiration rig - and that alone motivates me when I don't feel like working out. I want to see good results when I get there!
If there is any way for you to attend a rehab of some sort, I really, really recommend making that commitment to your full recovery. If you are a fitness buff already it will also help to keep you from over doing it too early, which is a real tendency if you are inclined that way, and is pretty brutal.