It really doesn't matter whether you get it from the tub mfg, the faucet mfg, a third party mfg or even select a generic however there is one point you must consider. Common Waste & Overflow kits have compression joints to permit minor adjustments during installation. The code prohibits compression joints unless there will be a 12"x12" service access either through an adjacent wall or up from underneath. If the Waste & Overflow will be in a confined space with no service access panel you are required to use a glue in type waste & overflow kit. The type of drain function you are looking for will be listed as a "Lever Waste" as opposed to the "Toe Touch" which you do not want.

Was the tub so full that water reached the overflow above the faucets?

Thanks so much for the suggestions and advice. I am concerned about being able to get the tub close enough for a faucet reach but far away enough to clean. Unfortunately, a floor mount is not ideal since we're on a concrete slab. A wall mount would be a much easier install. It would be on a wall backing up to the master closet, so I think we could also have a panel to access the plumbing. I really like the Newport brass fixture, although it's a bit more modern than fixtures we've used in the other bathrooms. I would like to use a readily available brand name so parts are replaceable.

We are on the verge of purchasing very well reviewed Sign of the Crab (Strom) plumbing products for a cast iron leg tub / shower converter fixture (riser, shower head, hand held shower head, leg tub diverter faucet...) for approximately $1,300 ..... BUT we just found something similar from Barclay, which is sold at Lowes and Home Depot, for about $400. The only reviews I have found of Barclay are about 7 positive to 5 negative, with the negatives all saying that a valve broke and there were no replacement parts available. Still, we could buy the whole set 3x over for the same price. But ... does the chrome peel etc? Anyone have experience with these Barclay plumbing fixtures? Thoughts?