Free cam build...

The Ti valves are of some concern if you don’t know their service history due to potential work hardening. Fast closing rates (hammering) accelerates the hardening rate of Ti valves. This is an area where the slow ramp rates and timid valve spring pressures with the free camshaft will be an advantage. I would be more concerned about what block to put this on and be looking for something that could accept four bolt main caps.