If you're referring to the Intel Pentium G3258 then yeah thats a good CPU, but you really do need a GPU. If its just going to be a give away after a few months, consider using an APU. While the CPU isn't amazing, its graphics is gonna be a lot better than the integrated Intel on the Pentium.
Yh I plan on getting this gpu http://www.scan.co.uk/products/1gb-msi-gtx-750-oc-armor-fan-pcie-30-5000mhz-gddr5-gpu-1059mhz-boost-1137mhz-cores-512-dport-dvi-hdm.