I am looking into a gaming laptop to support autocad and 3D model viewing. I am looking at the following: i7 4710 processor, 16GB memory, 128 SSD +1TB hard drive and NVidia GTX 970. Is bumping up to 256 SSD and NVidia GTX 980 something I should really consider or not? Cost of upgrades would cost about $400.00 when configured so.