My girlfriend and I will be in Amsterdam June 30th. Our flight is scheduled to get in at 1:05PM. We are trying to find flights to London later that evening, I have found some cheap flights on EasyJet that leave at 9:20PM. How much time would that actually leave us to explore Amsterdam a little bit? Once we get off at 1:05 we will have to get our luggage (flying KLM into AMS) (do we have to go through customs? how long?) and then check in for our evening flight on easyjet. If we can't check in that early can we store our luggage somewhere? Any suggestions?

Thanks!