Advice on building up my Desktop

Solution
No can do, you see GTAV Demands 4 CPU cores to Run along with far cry I believe. Civ and skyrim should work though with that CPU. Also, that seems to be a small form factor like PSU, and those are not cheap. you will want at least 350 watts so that you can run a graphics card. You may be able to swap out that CPU for an i3, and then get something like a GTX 750ti, which could do the trick, but the the power supply would be over budget. the lowest power graphics card I would get would be a GTX 750, and you will need a quad core i3 or some other quad core that will work in that motherboard. I would try selling that computer and building and AMD rig, as you will be able to meet the minimum specs for less money.
No can do, you see GTAV Demands 4 CPU cores to Run along with far cry I believe. Civ and skyrim should work though with that CPU. Also, that seems to be a small form factor like PSU, and those are not cheap. you will want at least 350 watts so that you can run a graphics card. You may be able to swap out that CPU for an i3, and then get something like a GTX 750ti, which could do the trick, but the the power supply would be over budget. the lowest power graphics card I would get would be a GTX 750, and you will need a quad core i3 or some other quad core that will work in that motherboard. I would try selling that computer and building and AMD rig, as you will be able to meet the minimum specs for less money.
 
Solution
I managed to get a better computer for $150. It came with an i5 processor that could run all the games I want, and a graphics card that can run the games (though only on lower/medium settings...I will eventually replace it.)