Wellll.....there's middle-class and then there's middle-class. In the SF Bay Area, $1M+ homes are middle-class. Upscale is roughly in the $2.5M+ area. Really high-end goes $5M+, but that's due to amount of land, not really size of house. So it depends on where you are, as usual. I'd decide based on what your buyer market is looking for. Many first-time homeowners love wood, then discover it's more long-term maintenance than they thought. It's not so simple to move all your stuff out of half the house to have the floors rescreened, once you've been in there for 10 yrs or so! Most busy, stressed, family-juggling homeowners are fine with the idea of lower maintenance as long as the good looks are still there - and I can honestly say, having just installed $10K worth of Mannington Adura LVP, it is MUCH harder to tell the difference these days between it and real hardwood (which we have in the rest of the house: original 1940's wide-plank oak with walnut plugs). Your decision. I'd trust a good local RE pro. Get a couple of opinions, and then decide.

If your wooden subfloor is in really rough shape, install 1/4-in. plywood underlayment over it. ... If the floor is in decent shape, you might only have to patch a few of those holes. Here is a very good article covering everything you need to know. https://www.familyhandyman.com/floor/vinyl-flooring/luxury-vinyl-tile-installation/view-all/

@clubnev Thanks for the info! Hot and humid here in Houston as well especially when power goes out. I finally ponied up a did a whole home generator to avoid being out of power around hurricanes and freezes. Did you notice that when your whole First Crush floor went in the flooring warmed compared to sample boards or laying out a single box? In certain areas of my home samples/sample boards will grey up in the day with certain natural light, but at night under 2700K lighting.... Wow...perfect light brown floor with no wheat, yellow, gold, or orange.

At this point, the job ($4/sf for a BIG job with LOTS of things to do = awesome price) is finished. The cure is going to be worse than the disease. I'm a big fan of "Wait until you have a problem before throwing money/time at it." It is the cheapest solution I know of (I'm a pragmatist...who is both cheap AND lazy ;-P). My advice is this: leave it alone. Keep 10% 'extra' of the flooring product (roughly 75sf or to the nearest box). This will offer you the peace of mind and the material security you will need to feel secure. You will keep it in the back of your mind. You will know that IF something goes wrong you have ALL THE PRODUCT needed to repair/replace the damaged planks. With a laminate floor I wouldn't worry to much about a bit of bounce. People have 'put up with' bouncing laminate floors for 20 years (the SAME laminate they installed 20 years prior). That tells me the click system is fine. Your floor is a rigid vinyl (8mm thick = nice product). The rigidity of the core will help keep everything stable. The only weak point (as in everything in life) is the link (click edge) between one plank and another. This is the one and only place things *might go wrong. Now to be blunt, a rigid vinyl floor like yours can be taken apart and, "in theory", be clicked back together - BUT I don't like that idea. I really don't. We know the click-edge is delicate. We know that. We've seen them brake by grazing the ground before being installed. A vinyl floor that has been disassembled has a STRONG likelihood of DAMAGED edges. If the edge is damaged then there is almost no way you will get them back together. That means you will have to assume 25% damage should you choose to 'unzip' this floor to the point where it bounces. That leaves you with 75% intact flooring with 25% garbage planks (which must be replaced). As soon as you try to fix the subfloor underneath (by removing the flooring) you will have lost the 'intact' floor. You are guaranteed to spend MORE time, MORE money and MORE materials to deal with this. Compare that to 'leave it alone'. Right now you have 100% intact flooring. Every day you wake up to 100% intact floor is another day with a perfectly functional floor. Every day you have 100% intact floor is another day you have SAVED time, money and materials. Simply leave this floor alone until something MAKES you repair it. Keep your 5%-10% extra on hand for future repairs (and there will be future repairs). Use them if and when you need them.