Advice for single pig

Through a neighborhood website, I adopted our first GP. A man found him in a ditch while walking his son to school. Come to find out another of our neighbors was trying to get rid of both her boys through this same website a couple months back.... I compared pics and found that the one abandoned was indeed one of hers. So I assume she found someone to take one, and then ditched this one. Long story short, I visited him and fell in love. A very sweet young boy.

SO NOW we are trying to make this work. We don't have a lot of space. I have a crate that barely meets the size standards that I've read about. I have a 11 and 14 year old boy who are thrilled about the new addition. We've googled and googled about how and what to feed, what kind of bedding and toys are best, etc. We do floor time every day and they each hold him 2-3 times a day. We pass by and talk to him regularly.

It's only been 3 days. He seems happy, eating very well, and makes his chirpy noises when we pet and feed him.

I've read and read about how it's best to have 2. Just looking for any advice on how having a single can work. I'm also very worried about introducing another male, and them not getting along.

Thank you so much for any and all advice!