hmmm, i think all of those are acceptable, i've been asked out all those ways & it's nice cause it's light hearted like after a nice little convo you throw in the "hey, do you want to meet up for ______ tomorrow (or whenever)..."

no one stresses & one or the other cant sense the other's shyness etc. i just think it takes a lot of pressure off.

now if you're on you outing and you're still wanting to text to this person as your communication then theres some serious issues there. LOL