When DD decided one night to skip her 2am feed and go straight through from 11pm to 5am (lucky I know, she was barely 5 weeks old) I wound up having to send XP scurrying for a 24hr chemist to get me a pump because I was in a fair amount of pain from engorgement and had already soaked the bed with leakage...and had no idea how to hand express to any degree of success.

It might pay to have a relatively cheap basic pump on hand as a "just in case" thing, and then if you wind up using one regularly you could upgrade to one that suits your needs.