I would go with a GT 1030 due to the 180w adapter.
If I'm looking to buy a new psu and graphics card like the gtx 1050, would it be able to fit in the case? I'm not very knowledgeable with computers and am just looking for some better light gaming experience
I am pretty sure the board is proprietary, so you can't get a new case (correct me if I'm wrong) and the PSU is upgradable, but it will be hard as everything else is proprietary.