Shinobi1173 :
rwoody :
If you don't plan on overclocking, I wouldn't bother with liquid cooling. An air cooler would be the most I would suggest, and you could even get by without that. When you're not overclocking a CPU cooler will just help prolong the life of your CPU by keeping the temps super low. I would just stick with my first suggestion of an air cooler, that way you don't have to order one if you wake up one day and decide you do wanna overclock.
If you're absolutely sure you will never overclock, save some money and take a step back on the CPU. Consider picking up one of the non-K sku's like the 4790 or the 4770. You should save about $30-$40 by going with either one of them, and you won't really notice a huge dropoff going down to 3.6Ghz from 4Ghz.
One of my goals when I was picking the parts was to go far with it. I did not want to have to buy another processor, for instance, for quite a while. Do you think that if I downgraded, i would regret it?
Yes, but not for the reason you might think. Like I said, there isn't a huge difference between the 4790K and the 4970 or the 4770. On paper they seem like quite a jump backward, but in real world use they are very similar. It's not like you would sit there and say "Oh I wish I would have bought the 4790K so my games would load 3 tenths of a second faster."
If you saved the $30 and went with the 4970 or the 4770, you could regret the decision simply because you will know in your mind that you could have spent more money for just a little more performance. It's a mental thing. You might sit and wonder if you could have done better. If you are concerned by that thought, go with the 4790K. At least then you'll know you couldn't have gotten anything better without upgrading to a newer socket.
Also, if you do decide to go with the 4970 or the 4770, look for a H-series motherboard instead of the Z-series. Z series motherboards are meant for overclocking and they often come with a higher price tag. If you choose a non-K CPU then you wouldn't need the Z-series motherboard, and could save more money by looking at the H97 motherboards.