DO NOT GET A GAMING LAPTOP, in my opinion they are a waste of money and don't offer nearly the same performance you get from a laptop, from experience i bought a £600 laptop for gaming cause I thought it would be good, It was ****, that was in 2015, from my overview, the really good gaming laptops are too expensive anyway, they are bigger and bulkier (most of them), are louder at load to cool down the hardware as cooling solutions are smaller and the battery life on lots of them is abysmal and maybe will only last 1-2 hours or more if ur lucky.
There are better Gaming PC's which offer you more for the money, the preconception that they are too expensive is wrong, most of this comes from pre-built pc's from even reputable brands which are very expensive, most of it is vat and charges for building the PC, now I know there are some people who dont have the time to build one, in that case just spend your time shopping around looking for deals.
Honestly, your better off getting a pc and buying a really cheap laptop for work, look on ebay and other sites that offer really good deals, dont buy multiple monitors unless ur acc gonna use them and look for deals.