Someone up there gave the advice of just go to a school with a big theater department where you will get to try a lot of different things. When you are done with your B.A. re-evaluate if you need to go to grad school or not.
The most important thing is to get a good basic education and to keep working. It's critical that you learn about all aspects of production, not just lighting. The masters isn't as critical as you may think. It can help, but who you know, who you impress, and how hard you work can be just as important. For example, here in Seattle at one of the biggest theaters in the
Pacific Northwest, the T.D. does not have a masters. He got a job doing summer
stock in the scene shop and worked his way up from inside. I'm sure there were lots of people with MFA's who applied for the job, but in this industry a piece of paper doesn't
beat hard work.
Cornish has an interesting program. I've heard some say it's great. I've heard others complain that they feel the tech department is primarily just there to serve the music program. I'm not sure what I believe. I would ask to speak to some
current students and ask them how they feel.
UW (my alma mater although not in theater) is a great place to get that wide general experience because there are so many things going on. There are multiple theaters, lots of productions, and you can get involved like crazy doing lots of different things. Which is really what you want as an undergrad.
Doesn't Southern Oregon have some sort of deal setup with Ashland? I don't know much about it but seems like I remember someone saying you get to do lots of great work with the Ashland people.
Western Washington University, in Bellingham, has a good theater program too.
Central Washington University, in Ellensburg, is a good example of a smaller school with a great program. I take summer classes there to keep my teaching certification up. I love the faculty there. It's the kind of place that has lots of things going on, but it's small enough that you can be involved in everything. As was mentioned above, bigger programs tend to be harder for you to get hands on experience.
Also have you considered UNLV? They do some really cool stuff connected to the nearby Vegas shows.
Pretty much the most critical thing is to try to talk with actual students about their experience. The department head and the recruiters will tell you anything to get you to enroll. Talk with students to get the truth of what it's really like.