I personally would rather do the upgrades, server backups, and software things over running the actual forums I have online. I have a very good and trustworthy team that take care or the moderation and user administration on my forums. I like to do all the technical stuff with my sites running the UBB Software.
I will say that if you can read and understand English well doing the upgrade your self should be a snap however I would always make a backup before you even start. I my self being quite savvy at this have been known to make a mistake every now and again.
As far as locating onto another server or hosting system I would hire someone if you are not that good with massive databases and programs such as an interactive community of this type.
