@1x2x3x4x if nothing else you had a great first date (which is sadly rarer than it should be). My Ex and I lived 4 hours apart for part of our relationship, and the distance did have pluses and minuses. So it's not all negative.
I don't know your situation or how old you are/ if you have children/ if you both have your own places, but all of that is a big factor. My children are adults now, so me travelling 4 hours away for the weekend wasn't an issue. But different and harder to juggle if they were younger.
Basically if you don't have any children, got your own places (by which I just mean not living at home with parents), and no other ties that would make it difficult to be away from home a couple of weekends a month then I would see how it goes.
Undoubtedly keeping a relationship going long distance can be harder - you can't just meet up for spontaneous drinks, or pop round to see the other person if they've had a bad day. But then again I feel like it makes the time you have a bit more special (although as I'm no longer with my Ex, I'm probably not the best advertisement!)
I would say maybe just see what happens/ go with the flow - I am the least go with the flow person so this is a do as I say not as I do kind of advice!
A final thought, is there any chance you will be back in the same area in the future (if one of you has moved temporarily for work etc) as again that can be a factor, being that far apart for a few months is different to indefinitely. Good luck though, and if nothing else you had that great date!