Assuming you can get the Vire rebuilt, I always think you'll get most of the value of the rebuild back when you sell, versus having an outboard, and you'll have the convenience of an inboard for your period of use.
As to the
wheel, I'd say its a million to one that Cal didn't build it that way, some PO added it.
PS - that is a very nice boat, the whole generation of Lapworth Cals sail like champs. Put the money into it needed to keep it up, its the type of boat well worth maintaining.