Do you mean Cabinova, or Cabnova? Two different lines. One started as an RV furniture manufacturer and is kinda clueless about kitchens. One is globally manufactured and just assembled in the US. I wouldn't' use either one.

Depends on what the bank is. If it's not at least 30K, which is the national average, then you need to reassess your budget, or your quality wants. Even 30K doesn't go far if the kitchen is bigger than a standard 14x14 size, or someone wants stacked to the ceiling or other high end pinteresty details. But, there's always local custom to explore, as long as they finish in shop with a 2K finish, you can get as good or better than factory manufactured cabinets.

Start with something middle of the road cost wise, and US made, with lots of options. Kraftmaid from s desler, not a box store, has fit that niche for 40 years. And it is still a decent value, if you don’t have qualified local cabinet makers. Those can be great, or horrible. You have a lot more in depth homework to do to sift through their specs to see if they produce something decent. With KM, you know what you are getting. Mid level cost and quality.

Thankfully not redoing the whole kitchen. I'm just adding an island - 8 ft- and one cabinet next to a wine fridge. Hoping to keep that under $18k

If that 18K doesnt include 15K of counter, you can probably make that happen in any mid grade cabinet line, like Durasupreme. Dont gorget that an islsnd needs 48” aisles around it, electrical run to it, and engineered steel support for any overhangs.