If putting him in daycare that extra day is an option, I think I would probably do that. Better to plan on it and not need to than to be caught not having made arrangements.
I had a 10 month old when I had my surgery and my husband was able to take off 2 weeks to stay home and help out. After he went back to work, I just made sure things were set up in the house to make things easier. We put a pack and play downstairs for naps so I wouldn't have to bring her upstairs, and I made sure everything she'd need was downstairs too - diapers, change of clothes, etc. 10 months is much easier in some respects than 7 months because at least I could get my daughter to help me out by letting her climb into her highchair with just a little help from me, rather than lifting her. Although in hindsight, I think I created a monster because at age 4 1/2 she thinks she's a little monkey and can climb anything!
I'm not sure how old your other children are. My other daughter was 4 when I had my surgery. It's amazing what you can get them to do to help out mommy while she's not feeling well. They really like to feel like they're helping you, so maybe you can get your older kids to help out. Mine would feed the dogs, help with the dishes and loved doing windows. My windows were never cleaner - at least on the lower part.
I found that a little advanced planning (freezing meals ahead of time, stocking up on necessities and letting the school and daycare know what is going on) went a long way.
Good luck on the 1st!
Lori