Sounds good to me. If you use A-2 then you will have something that wears well and tends to hold size during heat treat. Ream the hole .1865. Buy an undersize ream and use standard dowel. You should not have any trouble. I would suggest pushing the pins in instead of hammering. .1875 pins will deform if you hammer on them. .001 press is no trouble on .1875 pin.