Don't do it, yet. There are a lot of issues still floating about, 32-bit death being just one of them. I've been running it at home and am having trouble with Safari extensions, notifications, some mail issues, and a variety of minor problems. I just don't think it's finished baking, and recommend to all of my customers to wait until at least the 10.15.3 update, which will likely be in January.
Catalina will be excellent, but I think I've had more trouble with this upgrade than any in the past.
If Mojave is running fine, leave it be for now.