Mhmm, great question. I assumed that getting funding for your second year is always easier than your first because by then, you'd have networked with professors for research or teaching assistantships.
I'm in a similar position as you!
(Except I applied for the MS in Environmental Health: full 1st year funding at UW, a $10,000 fellowship at UCB, and zip from Harvard).
I've spreadsheets open comparing the pros and cons of UW vs Berkeley vs. Harvard and I'm slowly going crazy.
Good luck to you!