Will a and ADM A10 7850K cpu 8gb ramAmd r9 270x 2Gb gpuRun next Gen games at decent setting for a few years

I would say yes. It will be able to run most games very high/high detail and probably in medium as your card starts to age. You should consider switching if any game requires you to run in low settings becuase the quality takes a big dip at that point.