[masraum]

Originally Posted by john70t

I's gonna be impossible to get an exact match and be perfect.

Wood won't absorb stain with an existing coating. Stain will soak in and turn a different hue in 1-5 years. Minwax poly on top turns a much darker amber that way I have found. You can go over lighter areas with Minwax Polyshades or something similar later on, but that is just a band aid. Darker stain might blend better but there is no going back other than painting it later on.

I do like the idea of keeping it rustic and distressing the grain with a beater before final so you don't have to be too careful in the meantime. 40grit will mangle that floor quickly. A consistent look and smooth waterproof finish

Those are my concerns, matching, and the color changing over time.