I'm still not clear if you'll be racing USCSA college races, or not. Is that the goal? Does your college compete in the USCSA, in PA? And beyond that, do you hope to do some USSA racing, likely in that region? The reason that I ask is that it makes a difference in terms of what might work best. I know a fair amount about the USCSA, having friends skiing in it and others coaching teams. There is some very good racing at the top levels. There are some fully funded, very good teams. But the overall goal is participation and fun. While the races are USSA races, and you build a USSA point profile, there's not a lot of enforcement re: equipment compliance until you're at the top in one of the top conferences, or at Nationals.
If you'll be skiing in PA, and racing 30 second courses, what will work is a lot different than if you were racing top level USSA and entry FIS races elsewhere. You want to resist going macho on this, as it will not help your skiing. Even a USST skier would be faster on a different set-up than on their "normal" set-up for GS. A 193cm FIS radius ski won't work.
My recommendation: Boots first. I would find the race boot, in a softer flex, that fits your boot best, and working with a boot guy who knows how to grind and fit a race boot, get fitted and dialed in. Depending on your feet it might take some tweaking. But it's important. Get the right flex going in. You can cut to soften, but it's not always ideal. You want to make sure that you're aligned the right way, etc. Your bunion is a non-issue. Spend the money, take the time and do it right.
SL skis. Dimensionally, your current skis might "fit", but a real SL ski will help you learn to ski a lot better SL. Without seeing you ski, and going "blind" on this, a really safe bet might be a men's {165cm} Volkl. I see a lot of very good smaller guys in the ski academy and NCAA world doing very well on them. Rossi is another, perhaps Fischer. You can find very good used Volkl's {and every other brand} if you know where to go. I'll be glad to give you some direction if you PM me.
GS skis. Do NOT go macho, and get into a FIS compliant men's GS ski in a longer length. It will do you no good on your 30 second courses, as it will be impossible to ski them properly. I would ask your teammates about this. The macho guys, who don't get it, may well think that a full on race stock GS is important. I would instead use the type of ski that most guys who just own the beer league world race on. These are guys who in some cases have skied on the USST, and are recent NCAA All-Americans. 15-25 point FIS skiers. They all use "cheater" GS skis, which have a very similar construction, but are shorter, and are designed for a much tighter turn shape {shorter radius}. They will work very well for you, IMO. Fisher makes a very good one. I know a lot of guys who ski it in a 180, some in a 175. I think that every company makes a cheater. That would be my recommendation. True, it isn't USSA "compliant". Find out how much that truly matters where you'll be racing.
My kids race in the NCAA, and have raced at the NorAM level. The ONLY time they have every had anybody even look at a ski was at US Nationals, when one of them was randomly tested for stackheight. I bet that people skiing in your league, and region are skiing on all sorts of set-ups. The sport needs more racers, and needs to encourage them participating. Forcing somebody to buy a set-up that fits the rules, but not the hill, the course set, etc. makes no sense. My $.02.
A cheater GS will also be a great freeskiing ski. You should get a lot of miles out of one.
That's my two cents. Do not sweat wax, at all. Simple Hydrocarbon from any company. Don't tune in your dorm room. Not smart to sleep with those fumes in your room. Particularly with all of the flu talk.
PM me, or post an email address where I can contact you if you want some sources for skis. Check this forum to start. There are some guys who sell a lot of very good skis at reasonable prices. I have a couple of other ideas, as well. Sierra Jim is also a very, very source.
Good luck. Have fun. It should be a heck of a lot of fun!