Yes, I think that's basically all you need to do. I think there are 2 size bearings, OD the same, but different ID. So, you need to make sure the bearing ID matches crank journal. There is also a "trick" bearing that does something, but I don't know what.
All my engines are bushing block, but I do have one bearing side cover. I tried to install it, but needed shims to take up crank end play (had too much). Otherwise it fit perfect. I ordered some shims (not that easy to find). I have the shims now, but haven't installed the bearing side cover yet.
As I understand it, doesn't really help HP any, just more durable it you have modified engine and turn a lot of rpms. My engines are stock, so I don't expect to see any benefits.
There are plenty of 5hp Briggs FH experts on this site that can correct my post and add to it. Maybe some will comment too.