Does this gaming laptop sound good for me? (Mainly for Minecraft)?

I'm looking for a semi-good gaming computer mainly for playing Minecraft. I'm willing to find a desktop but would like the portability of a laptop. My price range is anywhere from $800 - $1000 and maybe a bit higher. I need to know some things before I buy a computer. The computer I found so far is a Sager NP4658 (Clevo W650SF) and from XIOTIC PC it will be about $920 and the most important specs are as fallows: 4th Generation Intel Haswell Core i7-4710MQ (2.5GHz - 3.5GHz, 6MB Intel Smart Cache) for the CPU, NVIDIA GeForce GT 840M (2.0GB) GDDR3 for the GPU and 8GB DDR3 1600MHz [1x8GB] for RAM. The specs sounded pretty bang for your buck but i'm not an expert on this stuff but I know the basics. The computer is mostly just casual games suck as minecraft but ocasionally I play games such as COD: MW3 and GTA 5 when it comes out for the PC. What I need to know is how much FPS do you think on minecraft I could get with this computer because I'm looking for about 100+ FPS but like I said, i'm not an expert on that stuff and if there are recommendations for a better computer for about the same price or a bit higher, I'm up for suggestions. I also need to know is it worth it to get a laptop in the first place or should I just being looking for a desktop PC and were should I start looking for that? I need thorough answers as I have a long time to wait before getting the right computer.