Sup man,
1. No heatsink on the ssd should be fine. There are heatsinks on your motherboard.
2. Honestly get whatever brand you can get, EVGA and Asus are both good.
3. Both insanely good psu's.
4. Noctua has more fans that are in stock. Other brands you can look at are Corsair, BeQuiet! and Lian Li.