I am in your shoes and a 1L as well. I have classes 4 day/wk as well and work 8-5 (lunch at desk) and my school is 1 hr drive from work. I study for 2 hrs on fridays. Sat and sun, I start around 9 and take a half hr break at 1 pm for lunch and continue till 7pm. That's 9 hours of solid contact time a day. I have a 7 month old and believe it or not, my spouse eats her breakfast , packs for the day and goes out either to the mall, to the park, on a drive, for a walk or to run errands only to return late afternoon. No, I did not tell my family to adjust, they just did. It gives me a quite house to study. I am prepared to go to the local library to study if it gets loud in the house. After 7 pm it's our family time when I cook, play with my baby, my spouse even calls our friends over for dinner!
During orientation they said that PT students have to be super human. At the end of the day (10 pm) when I get home I feel I am a dead horse, no energy for the next day and then my daughter wakes us up some nights. It's a tough world, but you'll get used to it. For me, what gets me going is a very supportive family and a supportive boss at work.
I say count your blessings and do your best. Atleast that's what I intend to do.