I'd do it just 2k direct gloss if doing frozen white as Niel says above is hard to see and keep clean and gloss will be more thicker and durable for the floor

And my best bit of advise would be if you've put all that effort in to prep is get a painter to paint it for you , no offence intended but no point in mucking it up at the final bit as am sure a painter in your area would put the paint on it for some beer tokens if all ready to go