Is it okay to apply for an out-of-state job to learn about a company if you're not ready to move yet?

I feel like this is an odd situation, but I want other’s opinions on the etiquette of doing something like this and if it’s even recommended in my situation.

So here’s the deal: there’s a good chance I’ll be leaving Arizona and moving to Chicago in the next 6–12 months, as my boyfriend has moved there and we want to spend the rest of our lives together. We know we want to get married, but there are certain things we each want to accomplish first. I don’t have any contacts (other than him) in the area, so I’ve been researching different companies I might be able to work for in the future.

Thing is, while I’m still in AZ and not in the middle of a big move or trying to nail down the details of relocating, I’d like to reach out to companies I think would be a good fit for my career goals and be able to have an open conversation about the possibility of working for them in the future with the hope that, if I do qualify, they could keep me mind should something become available when I am ready to relocate.

Is this an okay thing to do, or am I just wasting (their/my) time? If it is okay, what’s the best way to go about something like this if I do get an interview?