The nice thing about Hraesvelger is that she will forever be your main wind eidolon and has a ridiculous -20% def down effect, which is extremely strong. But you also need to look at dealing with elemental disadvantage, meaning you'll most likely use a water team to deal with fire related stuff than your wind team, making your 2nd option much better in backing up your wind team since it already has 2 good water SSRs. Odin isn't particularly useful as already mentioned.

Wind also has one of the easiest starting set up to use thanks to SR Cybele and R Zephyrus. With Joan, you can already hit -50% atk down. With Ambush as a ex skill and Hraevelger, you'll also hit -50% def down. Grabbing Hastur would free you from using Ambush for whatever you ex skill you want.