Hi. I'm doing a $400-$450 build. I have a build here: http://ca.pcpartpicker.com/p/g2hgmG. This is a new build I'm doing. I'd rather not buy used parts. I live in Canada. For this build I have some questions: Should I swap out the pentium G3258 for a G3220 to get a gtx 750 ti? Is it better to get an AMD athlon X4 860k ( Because I plan on doing upgrades)? And is there any other improvements I should make? Thanks.