Best of luck with her spay
I agree that the hardwood floors should be fine, depending on how she goes she may need a couple more days confined in her cage, just to be sure. You really don’t want her doing binkies and jumping on furniture.
For the pellet mash, I just thought I’d add that you don’t have to crush the pellets, if you add a bit of water, it takes about 15 minutes + and the pellets will swell and soften right up so you can just stir them together rather than going to the trouble of crushing pellets.
In terms of microchipping, I had Bandit chipped when he went in for his neuter. When chipping pets over here, there’s also an optional ear tattoo as an extra measure to let rescues know to check for chips, although if that’s not common practice where you are it probably won’t help much. Commonly rabbits aren’t chipped, but I think it’s worth doing anyway, especially if your bunn spends some time outside. In my opinion, all vets and rescues should be scanning any newly found pet whenever it first comes in. To the best of my knowledge there’s no downside, perhaps some local irritation for a day or so. But being often free-range in the house, I didn’t want Bandit ever accidentally slipping out the door. My other thought on the microchip is that often with rabbits, vets only like to chip under anesthetic, so if you don’t get it done now and change your mind later, they may want to wait until she has to go under for something else, or put her partially under specifically for it.