quite good for your 1st unreal project actually. The kind of materials and lighting you need to do is going to help you.
For high res screenshot don’t put your hopes too high, the current system does not work with temporal AA 
You can try it with FXAA but it’s not that great imo. You can upscale your screenpercentage to very high but in the end the best screen grab is going to be from print screen and it’s going to be limited to your monitor resolution.