When you are deaing with a sentence like this (or one that is "neither/nor" or one that is "not only/but also") you need to look for parallelism.
Either [type of speech] or [same type of speech]. You should be able to switch those words exactly and have a grammatical sentence.
- I want to go to either [the mountains] or [the beach]. --> Switch: I want to go to either [the beach] or [the mountains]. Grammatical? Yes. Logical? Yes. This works.
- I want to either [go to the mountains] or [the beach]. --> Switch: I want to either [the beach] or [go to the mountains]. Garmmatical and logical What do you think?
- Do this one yourself.
What conclusions can you draw?
Even though people will know what you mean, you'll know whether you've written a good sentence.
Interested in Language