Watercooling kit config

[blackcell1]

I've only ever really only used air coolers and aios and now that I've invested a large sum of money into my new rigg, the next step is to buy a full hardline loop for my CPU and GPU. Ive seen that ocuk have a kit config but I really don't know where to start, ive watched a few videos in the past on building and I guess my budget would be around 400 to 500 max without the GPU block.

Any help or info on what I should be looking at would be great.