Benson, congratulations on your license!
I am a broker at an office in Lake Oswego (so essentially Portland) but I live down in Molalla (east of Woodburn - about 1.25 hours from Corvallis) so in between Salem and Portland - 2 different markets on 2 different MLS's. I tend to work far and wide - so Portland down to Independence right now, for one client.
As you know, you're licensed in the entire State, so theoretically you can hang your license anywhere (as long as the brokerage agrees to the distance). So much is done online these days that, again, you can theoretically do a lot from anywhere. But I think there are practical considerations, especially as a new agent. One is support - the test doesn't prepare you for the position of being a broker and the day-to-day challenges. You're going to want a mentor to whom you can ask the questions that will come up constantly. There is also something to be said for osmosis - if you're working full-time (or where you'll be able to go into an office regularly), you can gather a lot of knowledge by just listening or getting involved in conversations around the office. Not all offices are like this and, of course, if you won't be going into the office when people are there, it doesn't help. The biggest factor in your success will be boots on the ground - meeting people, getting to know a market, building relationships.
Another consideration is the MLS you're in - Portland and Corvallis have primarily different MLS's (there is some overlap - but you'll miss a lot in one market or the other). You can join more than one MLS but it is an extra expense if you're not committed to an area. And, as a rule, you're the one paying these expenses.
You can partner with other agents in different markets for referrals but if your goal is learning the other market, that helps you build good will and makes you some money, but it doesn't help you learn.
I am down in Independence frequently. I would be happy to sit down for an hour with you if you wanted to talk about your thoughts and ideas. Message me back or call and let's set up a time.