Honestly it all depends. There’s a lot of factors involved. Do you have the time and space to commit to two separate bunnies while they go through the bonding process? Do you have a contingency plan in the event they don’t bond. Are you financially stable/independent enough to care for the medical needs of two bunnies. Your first bunny may be healthy and that’s great, but when you add a second one you really don’t know what health problems could arise down the road with bun 2 or even bun 1. So be financially prepared. As for would he be good with a friend, it depends on their personalities and if you’re patient enough to bond them properly.
Wait 1 month for the new bunny to settle in (absolutely no face to face interactions between them)
Prebond after the new bunny has settled in for about 1-2 months, the idea is to see little aggression
Short sessions in neutral territory increasing in length the more comfortable they get with each other.