Those are questions that you have to understand that no one but yourself can answer for you.
If you're told to go for an exclusive LTR, but you dont really want it, and you do, what then?
And what if you're told to go the FB route, but you really want to be with her on a much deeper level, then what?
You see how YOU have to know what YOU want BEFORE you 'pull' any woman from anywhere? it doesnt matter where, a bar, the supermarket, anywhere...
YOU have to KNOW what you want, what you're ready for, and what are deal breakers for you.
You can research what makes generally good GF material, in terms of the Qualites a partner should have, but you cant go on teh internetz and ask
"Hey! Tell me what I want for my life!!! Tell me what I should want!!!"
Can you see how you're giving away your power and giving your responsibility to some people who dont know you to CHOOSE for you???
For now, I say dont jump the gun and be OVER EAGER with this woman.
Just because you had good sex does not mean its a relationship, and it doesnt necessarily mean she's a downright ho exactly either...
You're going to have to be gutsy and navigate this one on your own.
And follow your VALUES and what you want in a woman.
You know you want female companionship.
However, in an exclusive commited LTR, you are going to have to be more giving than in just an FB/NSA situation.
If you're not ready to fully be there, then slow down. Respect her needs too.
Good luck.
I hope this helps clear things up a little, and you start reflecting on who you are and what you want, and what your needs are.