How to Split

I just check my 1 hive that made it through the winter and It's filled the deep and super they're in. I found 5 capped queen cells but there's probably more as I didn't check every frame. I was just checking in on them and didn't bring enough equipment to do a split. I know I need to split it asap as I don't know how long they've been capped.

What is the best way to split the hive? I tried to split last year but it didn't work out. Could I split it into 3 hives, or should I just try to split it into 2?