Aww,too bad,but if it is not a good time then it is best to wait.
When you do decide to get mice...you mentioned you wanted females,that is a good idea,cause male mice STINK! One male mouse can clear a room.Because of that,I decided I will now only have female mice.The last male mouse I had,I ended up rehoming him because he reeked out my whole house.I could smell him everywhere.
I prefer male rats to female rats,but when it comes to mice...I like the girls better.