How long should i wait?

I recently joined an online dating site as my social life is non existant! Got chatting to a few guys, one whom i really like, we've arranged a date but destination hasn't been arranged as yet. We've swapped numbers and he said he would let me known in a couple of days, when he has sorted something, Is this a brush off? Its been a couple of days and i was thinking of texting him tomorrow to see if it's still on. Would this be too pushy?

ask, chase a little, if ya get blow off 3 times move on.

No harm in asking. Depending on what happens when you do contact him is your answer. Play no games. If you're sincere, he'll know it. If he is sincere, you'll know it.