Dx4300 -15e case

not sure if this is the right spot for my ? but here it goes. can i upgrade the case i know ill lose the card reader(don't use it anyway) because its built into the case and has a curve to it. I want to make a few upgrades that the case doesnt have room for. I know i should have built my own pc to start with. time and money played a big part in my decision. Kinda of regreting it though. have had a few problems with it but nothing i couldn't handle. i want to make some upgrades that the case just doesn't have room for, don't get me wrong my upgrades will fit but cable management and air flow will deff. be an issue. I live in az and the heat is a problem in the summer i use this computer in my garage that is only cooled by an evap cooler. looking for a more air cooled friendly case with a bit more room if possible.