There is only 1 girl in my school (that I know of) who can do more than 1 pull and runs faster than me
(Props)
I think having cross-country is great, and joining track and field in the spring is great as well. I would say those plus the other life guard thing you are doing is enough to "satisfy". I can definately see that you have potential in running saying this is your 1st year in cross-country with a 7:05 mile? If you could make varsity on your team this year that would be a great plus but would require hard effot. I think the averages for varsity time in girls is around 6:30 mile (Minimum) but can vary by school.
I'm not really accurate on everything and my wisdom may not help you (haha) but this is what I can offer...
Averages I think are:
Bball - Like 60+
Pullups - 12+
Shuttle - Around 8+ seconds
Situps - Around 70+
Pushups - Around 50+
Mile Run - Around 6:40+
I would say you are a bit above average on everything.
What I think you can definitely improve on EASILY is the shuttle run. One, use the track for this (Great traction). If you have to use the gym, use shoes with a nice gripping sole and pick a spot with traction. But if you can use a track, wear track shoes with spikes and I can guarantee a 1 second drop (7-8 seconds). If you have really nice technique (Fast pivots after touching the line/dropping the cone, then your time will greatly improve). (high 6 to 7 seconds)
If you can't do any of that, I would work on you pivoting, thats the point where I get a fast time or slow time.
For other improvements, pullups could be improved but I can't help you improve that since it takes a while to do, and I don't know how much time you have. For the BBall throw, try to practice a bit more to have consistent 60s. (Practice everyday)
For the mile run, if you have the money and you are not using some already, I suggest actually buying or getting some track/XC shoes for the mile run. That can easily take off seconds to minutes in the mile run depending on the shoes you use for running already. Like I use sneaks for regular training weighing about 20 ounces which is almost 2 pounds. My XC shoes is about 4 ounces and so that is 16 ounces difference which is 1 pound. A mile is about 5000 feet.
So, the main difference is that essentially if you were wearing regular sneaks, you would be carrying that 1 extra pound for like 5000 steps which can really add up stress to your feet and slow down times.
When I used to run cross country meets I would get my first mile time in about 6:50. However, after buying some XC shoes, my mile time was 6:17 (30 second difference, and I was saving my energy for the other 2 miles, and the terrain for cross-country meets are usually dirt or grass which is bad). The improvement can really depend on the person though. If you run alot, there WILL be improvement, but if you don't run alot there wont be much improvement. Since your mile time is already 6:48 I can assume you run a bit and getting XC shoes/track shoes will be a great choice for bringing your mile time to possibly a 6:00 minute to a sub 6:30 mile. (If your using some already, ignore everything I just said
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Its just a small bonus for the mile. It could really help improve your times or it could not help at all.
Remember, this scholarship is like 450,000k dollars and $20-$30 is a small price to pay for improving your chances during a make or break.