I can fit a 56mm thick 360mm rad with 25mm fans and have about a cm spare from my atx board in the 810. So I think 60 is the limit for Push in the 810. Although just with pull you should be able to fit one of Alphacool's Monsta 80mm ones.
Corsair AX860i is very good and comes with corsair link. Otherwise anything Silverstone or Seasonic are very good. (if you were sleeving then Silverstone are good since they don't have 2-1 cables which are a pain to sleeve)
I love EK since they have a very large range of products. But not that much of a fan of the CSQ, mainly because of the way the fittings are positioned, which means you can't use crystal link.