The other less obvious solution to your question, you initially asked:
"What is a better long term solution to my academic and video gaming needs?"
The answer is no gaming at all of course lol. If you're concerned about grades, take it from me, you'd much rather spend your spare time in the gym or with a girlfriend than gaming. I'm an Environmental Engineering major at UCSD and in my five years of study I've learned a lot about spare time and college.
My first two years of school I had a PS3, a 32" LCD TV, a gaming PC and a Dell XPS laptop. I loved my "set up". Crunch through my homework, use my Dell for papers and when I'm done doing work, load up Call of Duty and start taking names. And then this pair of guys from Boston moved into my house temporarily and around the same time, I started dating my girlfriend at the time. And then, my time schedule shifted to: Crunch through my homework, try to use my Dell for papers and when I'm almost done doing work, spend time with my girlfriend. At a certain point I gave the guys who moved in the green light to play my PS3 when I'm not home.
And then Calculus and Physics came in, and programming homework and my PC gathered dust. I sold my PS3, TV and gaming PC to finish acquiring the funds I needed for a car.
By my Junior year I had c

nverted, and I had become so accustomed to using a Mac for all my needs (academic, professional and entertainment) that I had gotten accustomed to the levels it could meet those needs. If I had to give my Classic MacBook Pro from 2012 scores out of 10 on meeting needs, I would give it:
Entertainment: 10/10
Gaming: 7/10
Professional: 9/10
Academic: 11/10
In the end, I didn't mind being limited to PS2 emulators, CSS, League of Legends and Starcraft 2 on "medium" settings because for me, the convenience of one machine and my lack of being at home to enjoy a gaming PC to begin with, gave the MacBook the edge I needed to be my viable primary machine.
If you get an Air, you'll absolutely meet your needs and also achieve a ton of battery life but don't be surprised if you start neglecting gaming. College can take a lot of time, not just from homework but from research, internships, social clubs, a girlfriend, going to the gym... I feel like my MacBook was almost "not that good" at gaming on purpose in foreshadowing of what my college career would be like in its later years.
And good luck at school! This forum is a great place to talk to people about school as I've found that most of the people I know who own Macs are educated.