Some thoughts:

Where will you pitch the tent? If the tent site is abrasive, sharp or soggy, having a second layer between the floor and bare ground can be worthwhile.

How heavy is the floor fabric? Thin floors, e.g., 20D or thinner, are susceptible to tearing and wearing through. IDK your model's specs.

"Fast pitch option" Some tents can combine the footprint, fly and poles only for a simple and light shelter. Maybe that's of interest.

Less expensive options are a hunk of plastic sheeting, Tyvek spun fabric, etc. I have a hunk of Tyvek "kite" fabric I cut to shape (more than one tent in my collection).

My $0.02
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--Rick