Replace flooring now or later?

[Mitch Hill]

I just took possession of 1385 sq ft 3 bed in San Antonio. Previous owners did a terrible job on some crappy flooring that was poorly installed throughout 80% of the house. The remaining areas have dated tile or carpeting inside closets. Since it's empty now and I have other rehab I am thinking about just tackling this now rather than later.  New flooring should add to the overall value as well as the rental value once listed.

Anyone have a formula to calculate the cost to re-floor an entire house with the same rental grade durable flooring?