I would do 4 in the kitchen for added moisture resistance personally
its looking great
the new gallon sized stuff actually SUCKS
its LOW VOC and it takes 2-3 times as long dry, its way more finicky about humidity and temp
it builds higher, but its harder to get a good even coat, because of that I usually use it for coats 1-2 and then open a quart which is a different formula and do that for 3-4
you may to get some tubes of ground up red oak....to pushs into those cracks before yo udo the last coat
I can check the brand of what I have
I got from the guy who did my floors, for when I redid my stairs
you can use the miniwax tubes of filler.......but if you do, do it AFTER the last coat, and get an artist brush and use that to poly it once
it will expand/contract different than the oak will....so you dont want it part of the main coat of poly