￼Rosewill Capstone series is pretty good, along with most Seasonic or Silverstone , though they will cost more than the Rosewill. Antec has a few choice units as well. You can always check the PSU thread here and find the recommeded PSU's in a certain wattage range. Hope those will give you some clarity.
G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBXL
CORSAIR Hydro Series H50 120mm Quiet Edition Liquid CPU Cooler – Intel Only
SAMSUNG 850 EVO
Corsair H50 is one of the worst AIOs on the entire market. Not worth buying whatsoever. It's worse than a Zalman CNSP8900 while running significantly louder, costing more, and being far more prone to breaking down. If you are going to go AIO you generally want to go at least with an H75 and preferably a better unit than that. Though it's not really necessary here as the Pentiums run really cool. I'd suggest a cheap air cooler like the CNSP8900 which can actually fit in the Node 804.