Yep, he looks pretty much there. Only minor comments are that you need to record the reputation he gets from Hermetic Prestige (probably "Quaesitor in Good Standing"), and decide upon his Magic Theory speciality.
For reference, there's a letter from a Magvillus Quaesitor to Gregorius in the aftermath of the Tasia incident here: Card & Board Games ARCHIVE & LINKS (with a not-terribly-subtle reminder to Gregorius about the mundane interference clause), which might be helpful for ideas for the quaesitors' current attitude to the situation.
The skilled woodsman is likely to fit more naturally into existing stories than the boatman, although either could work. You're welcome to make up some grogs - I'd suggest they're new to the covenant rather than existing ones at this point in the saga.