1st) Purely for Aesthetics.
2nd) Why 64gb? Why not? lol But seriosuly, dosnt more = better in terms of ram? More ram is better to a point assuming you can utilize it. Most users can get away with 8 gb but 16gb is kinda the sweet spot right now for most users. If you are doing something that can utilize the ram you will see a performance increase otherwise it will sit there unused and offer no benefit
3rd) I would really like to stick to compatibility list so I dont run into any issues with booting, ect. Not sure if the Dominator ram will have any issues with my mobo, if not that is the way to go since it is bolt on.
The deminator should, and I emphasise should, work. Most ram Will work with the motherboard the manufacturer just cannot test and verify it all. If you want to stick with the compatability list I would suggest getting one of the dominator kits in either the 16 our 32 gb flavor as you will be able to use the first option mentioned above.
4th) I am not very confident in my ability to take off the heat spreaders without any damage. lol. see above
The block I linked earlier is not the only one out there, there are other variants from EK as well as versions from other manufacturers so you will have to look around and find what is pleasing to your eye.