If you're writing an application, you'd better off with a library even higher on the abstraction layer. The one the abstracts away the choice of specific cryptographic primitives. Without being a domain expert your choices might end up subpar, your use of primitives might end up subpar, your attention to detail might end up subpar, etc.

Also, it would be nice to talk to experts in security, since choosing a library and choosing a curve is a very small part of it. You'd have way more ways to fuck up, say, key management, or miss a glaring hole in some other place of your system.