Unemployed with all savings in HYSA

Currently haven't been working for month and thinking of traveling for my mental health and I have weeks to decide to go to grad school or drop out. Honestly not sure if I want to do one year in accounting and thinking of waiting.. I'm 29f and don't have much work experience as I was working "under the table" for some yrs. If I have around 300k in Hysa, I wanted to open a vanguard account but not sure about fees I think it's free? should I atleast put 2.5k in voo and 2.5k in visas and put like 2