An opinionated answer: I love topology and hate how it's taught in just about every course and textbook I've ever encountered. For this reason, I think you appreciate topology the most after you've learned a lot of other stuff first and then can appreciate what it's talking about because you can fill in the pedagogical gaps on your own (more or less). Therefore I would delay this until after experiencing: Abstract Algebra, Real Analysis, and Mathematical Logic. Unfortunately, though, this pushes learning Topology until your senior year or possibly never, in an undergrad program. If you end up loving Topology and wanting to do research in it, that could be too late. So ... take this grumpy opinion with a grain of salt. It is at least in principle possible to take the course and do well after only a few proof-based math courses. I just feel that the typical student who does this, does not really "get" what it is in its soul.