Going for i5 will cost you more. Ryzen will do fine for 80-110fps.
Thermaltake psu are not good, only the grand power and dps g models are good.
Some other psu alternatives I can think of are corsair cxm 550, txm 550, vengeance 550
Evga g2/g3/gq 550, fsp hydro series, xfx ts and other seasonic gold rated psu.