Odinspeople get a great deal of variety. He’s gentler with some people than others. Some people get put through the crucible and learn why one of his Heiti is Ygg, the Terrible. It’s worth considering Odin as a whole, not the just the aspects you’re interested in. Mad ecstacy, warfare, strife, magic, the dead, they’re all part of the package. It’s scattered all over the eddas and sagas that Odin betrays and is not to be trusted because he works towards his own ends or that of a bigger picture and will not always act in accordance with what you want, what you agreed upon, or what you think you deserve.
It’s also worth considering just how demanding he has been of himself. If he doesn’t flinch to hang himself or rip out an eye in pursuit of his goals, he’s going to have aggressive expectations of his devotees. I don’t say this to try to scare you off, but to have you think carefully about what you want and what you’re prepared for.
You aren’t limited to Odin if you’re interested in poetry or spádom. Bragi is also a God of poets and music, and I’ve written before about Loki having ties to creativity. (There are quite a few devotees who are artists or, like myself, writers.) Frigga is renowned for being able to see into the future and would be good to build a relationship with for spádom, as are Freyja, Frau Holda, the Norns, Mimir, Heimdall (I’d argue) and, if you’re comfortable with it, Angrboða or Gullveig.