Re: liquid cooling? safe?
Liquid cooling is safe, if you do it properly and spend a good amount of money on one. There are brands to look for. I always hear of DangerDen and Swiftech when watercooling is the subject. And please ignore Thermaltake watercooling products, as they're notorious for leaking and low quality.
Since this is your first time, I suggest you do tons of research on the dos and don'ts. Petra's Tech shop is a good place to look at when looking for kits, as I hear they have great quality for the money. Also have a talk with aspire.comptech or Apokalipse, who are both knowledgeable in that area.
3770K | ASUS STRIX GTX 1080 | DDR3-1600 16GB | CORSAIR 650D | CORSAIR HX 850W | CORSAIR H100 | SOUND BLASTER Z | ASROCK EXTREME4 GEN3