Hey Saab, usually 6 means turn the water heater off and say goodbye to your Temperpedic mattress until the end. Occasionally, you'll luck out and have an overnight in the domicile, but only because that's where a mid-week trip happens to end. (I got maybe 4 of those in the 1 1/2 yr that I've been here).
We don't really have senior/junior domiciles. They ship you where they want you, regardless. Most of us are based at DFW, and plenty in FLL. I don't know where you live, but it'd probably be a plus if you wanted NY/NJ. (That would be the closest thing to a "junior domicile" but again, it doesn't really apply here.)
Assuming that your profile is accurate (no jet time) you'll want two years in the right seat (unless you're John Glenn, or something). There are a lot of new airports, company procedures, and equipment that you want to master. (Remember that as Captain, not only are you responsible for your own mistakes, but also the mistakes of the schmuck sitting in the right seat. Enjoy being the schmuck for a while). Two years is probably just right.