Seeking kitchen floor recommendation

[Just floored]

Would you recommend an appropriate durable flooring choice for my low-budjet high-performance kitchen?
My second floor kitchen expansion extends out over a former 6-foot wide cantilevered deck area that was already covered beneath my roof profile. The underside of that former deck is now shored-up from beneath with posts and properly-sized glue-lam beam to support the weight of the relocated exterior wall now enclosing that portion of the expanded kitchen. I had considered ceramic tile, but there are some obstacles. Continuous 2" x 10" floor joists 24" on center support the kitchen floor. The enlarged kitchen is now 17' 6" x 18' 6". The existing kitchen's 5/8" particle board underlayment was removed, and the existing 3/4-inch plywood subfloor is no more than 3/16" lower than new 1-1/8-inch t&g plywood subfloor that was laid down over perpendicular plywood strips to level the formerly sloped deck beneath. Since the lower floor ceiling is finished, and can't be bolstered from the underside, the 24" joist spacing suggests to me that the pre-existing 3/4" plywood subfloor should be built-up if cement board units and ceramic tile floors were to be used. Since the abutting floor suface in adjoining rooms would present undesirable transition considerations, I am instead considering installing underlayment-grade exterior plywood over the entire floor covered with flexible flooring material such as some form of vinyl.

The kichen is intended for serious cooking with several people having fun preparing meals together. Cabinets are planned but not yet ordered. A center island of cabinets will have a small sink. Two more sinks, each with proximate dishwashers, are plumbed for the overhanging wall. Two refrigerators and two ranges positioned side-by-side will be on other walls. All appliances will be white, the sinks are stainless steel and cabinets will be a natural-finish hickory. The kitchen will look good, but function is the overarching goal, and the floor must withstand the load, provide a washable surface and be wear-resistant. Because it will be more than 12 feet in either direction, floor seams are inevitable, and so long as it is sufficiently water-resistant to be washable, having tiles or planks could be a distinct advantage should some small portion require future replacement. I recently became aware of the innerlaced floating vinyl floor materials by Konnecto and Allure Trafficmaster, and if they or some similar floor will provide the needed wear, and can be installed under the weight of the twin residential-grade appliances planned for the kitchen, that application seems very appealing. Marmoleum sheet roll flooring has also been mentioned as a solution for consideration. I am wide-open to and would be grateful for any suggestions for flooring materials and appplication methods you may recommend that would do the job well.

[stullis]

You might consider a luxury vinyl tile (LVT) product such as Congoleum's Duraceramic or Mannington's Adura line or one of the any other similar products.

There are methods that may allow the use of ceramic but you may have too much going on for me to make recommendations without seeing it. Ditra XL and another layer of plywood would be a start for ceramic tile.

[Just floored]

Thank you, Scott. Your suggestions are quite helpful. Until you mentioned it, I had not been familiar with Ditra XL. It appears that this product would be the key to uncoupling the tile from the subfloor while making it possible to confidently tile the 3/4" subfloor above my 24ioc floor joists. Now that I'm aware there is an approved method for it's reliable installation, I might prefer to have tile floor in the kitchen. If you happen to have the time to share any further insights with me, I would be delighted to hear from you.
-Chris