When I was a freshman at my first, smaller school, one of the coolest seniors who was that natural asshole swagger gave my pledge class some underrated advice:
"Fuck something".
At first it was a little jarring for me, having been picky with girls I was with prior to this (a little too much), but as the year went on, it occurred to me what he really meant by this. What he meant was, get experienced, get your dick wet, and you'll eventually be fucking the girls you dream about fucking.
My experience showed me that this "method" absolutely works. The guys in my pledge class that didn't get a whole lot of pussy were also the guys that would talk the most shit about other guys fucking "beat chicks". Almost every guy in my pledge class that started off banging girls that weren't so great ended getting snatched up by or having banged a cute chick by the next year. They got shit at first, sure, but cut their teeth to get what they wanted.
You know who ended up getting
even more shit?
The guys talking oodles of shit on other guys for fucking beat chicks - who were now friendzoned by all the hot girls they were "working on" and would occassionally get drunk enough to start flirting with a fat bitch who would catch on that they might get some dick tonight. Oh and then they'd have rumors about if they were gay, it was great.
First girl I banged after joining greek life was a frat rat, and after that was a nympomaniac. Pretty big sluts, but both gave me great sex and restored confidence after not getting as much pussy as I expected my first semester.
By the end of my sophomore year I had a much higher notch count, a player reputation, a few fuck buddies, and had bedded some hot chicks.
overall I find her attractive,
Then, go for it man. Get the experience, get laid, and then get laid.
If you main concern is of preselection, it still works this way. With the case of this girl - she's a senior. I can speak from experience an underclassmen "dating up" or banging an older girl makes her younger friends more interested in you. They look up to her and see her as an authority (high value), and you just fucked her. It's very good for preselection.
And as Chase has pointed out before, it's overall beneficial to
Lower Your Standards And (Thereafter) Date Hotter Girls.
Side note - if Hector's King of College is back on the shelves, 100% get it. I've read it, it's fantastic and while anecdotal extremely insightful.
Hue