I did not have time to read all but just something to put in my 2 cents . There a couple places here if you go and talk to them and tell them what you doing with the computor they casn mke it at the same price or a little more than what you buy pre made and you get what you wish like the Cad Graphics cards talked about already . Guess the best thing to do is find a place there in your area and check them out with your list of questions

what you see is not what you know; it in your face