

For you personally to use that word to describe or allude to yourself and only yourself seems like something thats totally your call.
I do have to say though that encouraging someone else to use a word that is (or was once) a slur - especially if they are not gay themselves and therefore cannot possibly be reclaiming it - feels like a regressive and fairly crappy thing to do (assuming that they are straight).
The only rules that matter are the ones you and your date agree on and largely revolve around where it is you decide to meet. There’s nothing wrong with either of you having a drink if you’re somewhere that serves alcohol. There’s a lot wrong if either of you go on a bender. There’s also nothing wrong with drinking a soft drink too. Or doing an activity based date rather than a food/drink oriented one.
Just communicate openly with each other before the date with an eye towards your dates feelings/perception of safety.