No check on quatrrnion interpolaton - leave bump conversion the way it is.  Sometimes the bump will have to adjusted as well - it could in to high or too low.  You just always need to examine your mat & decide for yourself what you think is best & change accordingly.  Yes to group as single meshes - also check collapse identical materials - this will save memory!

I don't ever repose in Vue so that check is optional as to what you want to do.

Edited: I see we differ as to yes/no on single meshes ;)  I always click yes :)