A:AnswerProbably not, gaming id suspect you'll need better than an i3 . This is more a entry level machine. Good for school and basic things in my opinion.
A:AnswerYes, that should be no problem. Because it involves partially disassembling the computer to get to the SSD to replace it with a higher capacity unit, the work needs to be done by a trained technician. The Geek Squad at your local Best Buy would be an excellent choice.