Your goals should be what you want them to be.
It looks like you are not after an LTR, is that correct?
If that applies to two of the other girls as well, ie one has a boyfriend and they are all aware you are seeing other girls, isn't it just a case of keeping the right degree of contact? Enough to not appear over-interested but at the same time on their radar?
If you are not after an LTR, no it would not matter if she jumps on other guys while you are away, you'd just want to make sure she is available when you want her to be. For her to be available in that way she has to believe there is some benefit to her. You would need to game them now and then to convince them it is worth their while to be available for you.
It looks like you are not after an LTR, is that correct?
If that applies to two of the other girls as well, ie one has a boyfriend and they are all aware you are seeing other girls, isn't it just a case of keeping the right degree of contact? Enough to not appear over-interested but at the same time on their radar?
If you are not after an LTR, no it would not matter if she jumps on other guys while you are away, you'd just want to make sure she is available when you want her to be. For her to be available in that way she has to believe there is some benefit to her. You would need to game them now and then to convince them it is worth their while to be available for you.