I vote for floating, click, wood look, luxury vinyl plank. I especially like the style with knots and chatter marks. Lay it throughout the whole house, on the diagonal, with no thresh holds. That's what I did. I can clean the entire house in approximately five minutes with an electric leaf blower. Porcelain tile is more durable however it is more expensive to buy, more expensive to install, and more expensive to uninstall. Also, some tile is extremely slippery when wet whereas wood grain LVP is not slippery at all. Five years later I am happier than ever I chose grey driftwood luxury vinyl plank for a house with dogs, kids, beach sand, and lots of wet feet. If the house gets inundated from storm surge and ocean water gets inside, I can unclick the LVP, clean and dry the subfloor, and then reinstall the same LVP and it will look as good as new.

I'm not an expert but you should be able to put stuff on floating vinyl floors... right? My parents did vinyl planks in their basement and they have all sorts of heavy furniture on it. Couches, beds, heavy dresser, etc. I have it in part of my basement too and also have a big sectional, heavy TV cabinet, etc. The vanity will just be contacting it in four small spots where the feet are. I wouldn't think that would prevent it from expanding too much as long as you leave the requisite gap by the walls. I would take a close look at the installation instructions for the specific product you will be using and see if it says anything like that. Or ask someone familiar with the product. But in any case you are right that if you don't extend the floor under the cabinet it will look weird / unfinished. If you are 100% locked on the vinyl floors and that vanity, personally I would risk the expansion issues vs. leave a big gap around the vanity.

@V M sorry, just seeing your post above. We are just now finally breaking ground on our home so I don't have pics of the flooring to show you from my house. I will come back and post when I do but that will be some months from now. But we are paying, I think, 15K for our Multi-Length Rigid Core SPC floors in color Sandhill. Our house will be 2975 sf and this floor covering will be throughout the home, except in 3 of the full baths and the utility room. I'm not exactly sure how many square feet that leaves but hopefully you can do some rough math. Everything goes through my builder so I don't have an exact price per square foot to provide you. I also am not sure if this includes labor to install.

Installing hardwood in Florida takes extra effort. The first part of that effort is having EXCELLENT humidity control in the home. In hot, humid climates that means the A/C might not be enough. It might require an additional whole-home dehumidifier. It can also rule out an 'open window' type of home. Again, it depends on the location and the humidity levels. Hardwoods must be kept in a 'happy humidity' range between 45% - 60%. At all times. Every minute of every day. For ever and ever. And ever and ever. That means you will spend more on your HVAC system to have that type of 'push button' control (whole home humidifier/dehumidifier). And then the type of build also dictates the best practice for installation of hardwoods. A concrete slab takes extra effort to glue down wood. A high-end adhesives must be used and those add $2-$3/sf...just for the glue. The hardwood and labour are on top of that. In Florida, the most appropriate floors are stone, tile, terrazzo or concrete. All of which are hard and cold. Of course a cool floor in a hot climate is a BENEFIT...not a drawback. Part of the cold flooring is it helps keep the house feeling cool. Vinyl is then the next option. The difference between the 'wood look' or the stone/tile look is simply aesthetics. If you LIKE the look of wood, then go for it. If you LIKE the look of stone/tile, then go for it. With vinyl you will require very good UV block on your windows. Ask your builder what level you have on your windows right now. You will want to find something with UV block ABOVE 50%. I prefer to see 70% - 75%. That keeps the vinyl and the house cool. But it also makes growing indoor plants a difficulty. Plants struggle with UV blocking windows at 70% or higher.