I have the Razer Blade and I use a Cooler Master U3 cooler with 3, 12v, 120mm fans.
I've had to give my cooler up to some artists using MBP's because their machines are thermal throttling down to 2fps.
I left my Razer Blade out in the open sunlight in Texas America for about 6 hours. I literally couldn't touch the laptop because it was so hot from the sunlight, HOWEVER, I was still pushing 80+ fps.
I can't say enough good things about the Razer Blades, It seriously has been the best purchase of my professional career. Adding a cooler under it doesn't hurt, but I can honestly say I don't need one.
I've had 4 of the Blades for a little over a year and have yet to have 1 problem with any of them. The Blade Pro however had some issues with their Raid controller, so that, along with it being to bulky for my tastes made me return it. I couldn't justify paying an additional $2k for an additional 2" on the screen and an additional 4 layers on top of the 23 layers it can already support at 1080p. I would highly recommend getting a touch screen model of laptop. Didn't think I would use that feature, now I couldn't imagine doing a show without it haha.
There are a lot of good options available these days. I would find one that fits your price point and do some online reviews for their thermal stability.
For me, the Razer Blades size, specs, and price matched my requirements.
Anything with a 10 series Nvidia card will probably be more than enough for your needs.
GPU and CPU exhaust ports:
