I have been in your shoes. When I delivered my second child, my daughter was only 4 so my husband and her slept in the hospital fold out couch every night. During the day he'd take her home to do baths and change, get some toys and snacks and come back to the hospital. I was also recovering from an un-planned Csection so we were there longer than I was expecting but everything worked out perfect.
When I was prengnant with my 3rd, I had no clue who was going to keep our 2 kids. My youngest was 2 at the time and I worried (since he had never been a night away from us) that he would be terrified to sleep anywhere other than home and the only person we had to keep them (my mom) only wanted the kids to stay at her place (she had dogs and didn't want to leave them). So anyhow, I was very worried to say the least. I knew I was going to want hubby there to help with anything since this time around it was going to be a planned Csection and I knew I would need him there so deliver day comes and my mom comes to the hopsital that evening, hangs out a couple of hours then when it was time for her to take off with the kids, my husband went down to buckle them in her car and all of a sudden the kids went nuts! LOL Both of them started screaming and crying for daddy to keep them with him and being the big softy he is, he scooped them right up in his arms and told my Mom he would keep them with him. : )
So I was a little scared at first thinking to myself, how in the world am I going to do this w/out hubbys help but it actually turned out to be a peaceful amazing time and I loved every minute of it. I knew my kids were being well taken care of and I had this once in a lifetime quiet peace with my newborn baby to bond with him w/out anyone else there but me. I realized it's ok to ask the nurses for help, even if it's just to help you walk to the restroom, they are there to help you so don't be scared to speak up if you need anything.
I remember when the on call OB came in the morning to check on me and he asked if I was ready to go home and I said, I don't think I'm ready yet, I know my hands will be full when I get home with all 3 and I'm really enjoying this time alone I have now with the baby and he said back, Oh with 2 little ones at home, you should stay another week! haha : )
It ended up being like a mini vaca for me, everything just worked out great. Hubby and the kids came to visit every day and called every night to say good night and I love you's. Looking back now, I wish I hadn't let myself worry so much about what was going to happen. If your husband has to take your son home at night, then that's what he has to do. You will be fine and will have plenty of help from the hospital and you will cherish that time alone you have with your new bundle of joy!! Good luck with everything, I promise you it will all work out!