The banks runs out of BFI are pretty good, no layovers, they are on a late afternoon night schedule M-F. Base management at BFI is the best, very easy to work with.
Arguably the best base in the AMF domicile system.
I'd have to argue some of these points. I TDYed in BFI for 3 weeks and have to agree that BFI is the best AMF base I have been to. But the Chieftain runs out of there were not for me. I applied to transfer and was offered but 3 weeks of the runs was enough.
The runs, there were only 2 PA31 runs at BFI, are both overnight and have a layover in Portland. You do not have to be to work until around 4pm or later fly north pick up some stuff fly back to BFI, load some more stuff, then on to Portland. Unless things have changed you have to sleep in the base in PDX, get up at 3 am and fly back to BFI.
My view may have been skewed because I was Portland based and had an apartment in town but had no way to get there. It felt like having to be at work for 8 hours and not getting paid. I could see after adjusting your schedule it could be nice having days free in Seattle, but bring your earplugs for sleeping in Portland.
One last note, I forgot to mention study your weather. It may be asked on your test, but you will certainly be tested on your instrument skills on these runs.
When I was stationed there it was around Thanksgiving and the weather was solid IFR for weeks. I had taken off at 3 am and was not quite awake yet. Climbing out through around 10,000 feet I heard controller vectoring a "heavy" from the north. Just around then the clouds above me and to my left started to light up. The glow was getting brighter and I was expecting to have the heavy fill my cockpit window any second. I was about to query ATC about its proximity to me, when I popped through the top of the clouds and saw the moon for the first time in 2 weeks. I had forgotten what it looked like.