I think a hydro boost is a great idea.
However I think you'll find that a master cylinder well sized to your wheel cylinders will come from a say late 70's and 80's medium duty truck and the hydroboost that comes with that is a larger version than you probably want/need. Those larger Bendix "Hydromax" I think they're called have electric pumps for backup if the engine were to stall/die. I've had a truck with one and driven a few more, they sure work but not as refined and smooth feeling as the common hydroboost that you find in pickup sized trucks.

I would sure consider hydroboost even without power steering. I have both on my 2 ton and it's great. But for my 1 ton I plan to run just a small PS pump, a TC pump I think is the model, to operate the hydroboost and keep the manual steering.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-