See i dont know what your personality is like...but it sounds like you're asking for her out on a date?? personally i think you should NEVER ask a girl out on a date unless you've slept with her... otherwise there's this whole fucked up vibe between you two during and at the end of the date... soooooooooooo... i think coffee or dinner or the movies are all bad ideas if you really want to keep this one lol...
i dont even go on dates any more lol... i just get them to come around to my house to "play guitar hero"... and then if i really like them then AFTER.. and only after i've slept with them ill say something like this... while they are at my house and ill make it look like a spur of the moment thing that i just thought of...
"im sooo hungry... i havent had a good meal in a while haha... oh fuck it... lets go... we're going to 'bla bla' to get a good meal... last time i was there they cooked the besttttttt chicken parmy

"
i dont use that exact routine lol... but you get the idea behind it?? it seems spontanious and doesnt have the usually "date" vibe... thats what i've found... it works for my personality... so give it a go and see how it works for you...
also be a man about it... dont do the old cliche' thing of asking her out to dinner because you're supposed to be a high value man and women alwayssss agree to your requests... so you should use pre-suppositions... they work wonders...
do you know what pre-suppositions are??