As someone already experienced in photography you already know that one lens won't adequately cover the range of subjects you mentioned. For example, architectural photographers make good use of wide angle lenses, while portrait photographers often prefer a lens longer than "normal". Given that, if you want one lens you're going to have to work harder to make it cover all the variety of interests you have.
I suggest a modern plasmat lens of 150mm from any of the major makers (Fuji, Rodenstock, Schneider, etc.) You aren't likely to notice a significance between lenses from these manufacturers, so long as the lens is relatively recent (that is, it's multi-coated,) and the lens and shutter are in good condition. As a bonus, lenses such as these are not expensive so far as large format lenses go.
I can't help much with the Petzval lens as I don't know anything about them. Sorry!