Hi there!
I thought I would try to answer some of your questions.
1. No, it is not always necessary to do a bunny date. Although a lot of people will recommend it, it is not a major problem if you can not do one. There are benefits to it though, like finding buns that have a suitable temperment for your bun, or seeing if they have a special connection.
2. I’m not sure, maybe somebody who knows more will come on answer that one. But how he is alone a lot he might really enjoy having a companion.
3. Many people on here are going to tell you that it isn’t safe to bond a bun that isn’t fix because they’ll be extra territorial, hormonal ect. I personally would wait until the new bun is fixed and healed before introducing them.
4. I’m not sure it will. I think personality matters more.
One thought which you’ve probably already worked out, but if you are so busy, will you have enough time, effort and patience to bond them? It takes a lot of time and hard work, and possibly even stress on your part when bonding.
I hope this helped some. 