Yes, glad you read my post.
It should scale pretty well up to 1.65v, and 1.65v will in no way degrade anything like the motherboard, processor, or memory itself. When you overclock, guess what you usually have to do? Increase voltage. 1.5v is just the JEDEC standard and a kit like that will do fine with more voltage. The only time I wouldn't up the volts to 1.65v is when it's one of those low voltage kits, like 1.25v since they probably won't scale good.
None whatsoever. I'm not familiar with that kit and how it scales with voltage, you might find that you find the best balance at 1.6v and it won't go much further past that. So do some testing on your own but staying at or under 1.65v for 24/7 is the way to go. Another thing to note is VCCIO voltage, this will need increased but I have no clue on what to tell you increase it to. VCCIO voltage is essentially the CPU's memory controller voltage, and when you run more sticks of memory and/or higher frequencies this will stabilize you.