where is the best place to park cash and be somewhat liquid if I want to pull some out for purchases. Roughly 150k
Open a Vanguard Cash Plus account or similar, paying 4.7% currently, FDIC protected. Can transfer in and out to your banking account within 1-2 days.
Vanguard Cash Plus Account | Vanguard
Vanguard Cash Plus Account is a cash management account designed to offer a competitive yield on your short-term savings.
investor.vanguard.com
That 4.7% will be interest income for tax purposes.