Hopefully someone with a larger board, who has updated from v.4.8 to v.6.0 can give you some feedback. I started with the
GAL
5 code base and haven't looked at the
GAL
4 code base to see what extra weight was added. My guess is that rebuilding post cache could be a problem so if I were you, I'd consider waiting until/if/when I get a copy of The Geek's
GAL
6 but it may take a looong time, assuming I get a copy, before a new release is available.