...this is really an aesthetic decision... I have both styles for two different baths. Hopefully you understand that a wall mount faucet needs to be roughed-in by a plumber prior to sheetrock? This means you need to have your vessel location and height figured out beforehand (so you can tell the plumber specifically where to mount the faucet valve). We did a "post style" faucet in another bath because it was a remodel and we didn't want to break into the wall. Personally, I like the streamlined look of the wall mount faucet we have and it keeps the countertop uncluttered. ...but again, this is a design preference... Good luck!

How about ceiling mount- the kohler purist suite is really cool and would be very at-home in a zen bath :)

Email a few manufacturers. Tell them in one sentence you want flex lines, remote valves, and high flow. like the examples you will give them, the ABC and the YXZ. They will all respond. It's all mix and match these days, with remotes and flex lines. Last week I saw that Kohler's Oblo 3/4" valves would do fine for what you need. Geberit's Cascading Overflow will also do fine. In Italian, "erogazione" or erogation will bring up some other results like this. The tub fills from the same place as the overflow hole. Any remote valve will do.

Here are some ideas to think about. You want storage for items like towels, candles, TP, etc. What about a free standing cabinet? Part (or all) can be glass fronted where towels, candles, bath bombs, even TP and less attractive things can be stored in baskets. By putting the shower door opening toward the vanity, this would free up the area at the tub end of the shower. An attractive cabinet against the wall next to the closet door would be a good location (see my edits). Then, a nice bench can be placed next to the tub to hold a burning candle, a fresh towel, a book, and a glass of wine to enjoy your bath with. What mystifies me is when people comment that the toilet is being seen as something terrifying or revolting. Nobody here said that about this toilet. There was just a desire to minimize it's view while using the tub to improve the tub area aesthetic. No need for such hyperbole.