Iam planning the remodel of my very small Master bathroom and would love some design input. :) I have double sinks in the front part and then toilet and shower are separated with a door. The bath is literally just the width of the standard bathtub. I added a pic of the outdated situation.

So far here are my ideas:

1. Rip out cheap old tub insert and change into walk in shower with glass doors
2. Door has to come out since there is not enough room for any swinging doors so thinking of going with sliding glass doors and replacing room door with barn door.
3. For the glass sliding doors I like the Ove series.For the shower floor we are thinking about using the Ove acrylic base. I feel like it will be much easier to clean.
4. Hardware and faucets....black or chrome? I guess it depends on which tile I want. Also my handyman mentioned dark would show all the limestone and hard water residue. Is there a brand that works well for dark hardware even with hard water or does this turn into a nightmare? I don't have a softener system.
5. For the tile...Iam debating between doing a beachy, seaglassy feature wall and white sides (subway) like the idea pic attached....
   or 5b) Stay safer with a porcelain marble look for the main shower wall (hexa or subway or big planks?) and white tile walls?
   or 5c) Use the tile I picked out today as a sample at the tile store with a geometric kind of texture (see pic). Iam wondering whether it looks too beige and I should stay white white? It might work really well with dark hardware though?
6. For the floor the store designer recommended the porcelain slate look tile in pic. I love the slate look but wonder whether this bathroom is too small for it and I should stay light all together?
7. For the cabinets Iam thinking either a whitewashed oak or a driftwood look?
8. I think I should add lights in the shower...there currently is only one of those old boob lights.

Which general style should I focus on?