Have you reviewed the financial requirements you will have under K1 visa?
You said you are both college students with little financial independence, I am not sure what that means for you as far as employment, and your ability to meet the financial guidelines for sponsoring her.
Phillipines may still be, it surely once was, on the list of "high fraud" countries, which means you could face even more scrutiny. Spending less than three weeks together and speaking for four months may not be sufficient evidence for the uscis, that is always a risk when these petitions get filed in a relatively quick amount of time and after a relatively short time spent together. Not trying to rain on your parade, just bringing up some of the logisitics you'll need to be aware of.