I've recently started something similar, though not quite so taxing. The only thing i would add to Jim's post is: PATIENCE.
It's going to take time for your shit to get used to all this. Train twice a week if you have to, and get some quality lifting in, eventually you'll adapt to it. John Broz has a good piece on this sort of thing:
"If you got a job as a garbage man and had to pick up heavy cans all day long, the first day would probably be very difficult, possibly almost impossible for some to complete. So what do you do, take three days off and possibly lose your job?
No, you'd take your sore, beaten self to work the next day. You'd mope around and be fatigued, much less energetic than the previous day, but you'd make yourself get through it. Then you'd get home, soak in the tub, take aspirin, etc. The next day would be even worse.
But eventually you'd be running down the street tossing cans around and joking with your coworkers. How did this happen? You forced your body to adapt to the job at hand! If you can't' squat and lift heavy every day you're not overtrained, you're undertrained! Could a random person off the street come to the gym with you and do your exact workout? Probably not, because they're undertrained. Same goes with most lifters when compared to elite athletes."