The difference between the Freezer 7 Pro and the Sunbeam will be a few degrees at most. If/when you overclock the Sunbeam will keep your CPU cooler then the Freezer 7 Pro. Cooler = more stability.
Both the Freezer 7 and the Sunbeam will fit in the 900 and 300... they have the same width.
Okay, I'll probably just stick to the Freezer 7 Pro.
And when I asked if everything would fit, I meant everything on my list lol, sorry about that.