If you pump it with the plugs in place (by hand) you should see bubbles come up through the reservoir. Just keep pumping as long as you see bubbles. The stroke should get shorter and shorter. Once you can't get and travel out of it (Or 1/8" I guess) then it's fully bled.
You can't really look into the reservoir, because it has that floating thing in the middle. 1/8" is what the instructions say. That's where the QR code on the paperwork with the MC takes you:

Bench Bleeding Instructions - Alltech Automotive
TECH BULLETINS New Master Cylinder — Bench Bleeding Instructions https://www.youtube.com/watch?v=b7_V5rnkvbshttps://www.youtube.com/watch?v=WtulIguDL-k&t=41s WARNING To ensure proper installation & operation of this New Master Cylinder the Original Equipment Manufacturer REQUIRES that this New...

I drove down to pick up my packages (about 7 miles round trip) and it feels about like it did before with the old, leaking MC. At least it's not worse; so I can go to town next week for groceries. I'll try working on it after I'm stocked up on groceries for couple weeks. I picked up the delivered DOT3 today, and the speed bleeders should be there for pick up on Monday.