I am 19 years old btw. For my IRA I already have the funds to max it out, Currently in my IRA I have VTI, VXUS, QQQM, and I want to add an etf which more small-mid cap exposure, in my brokerage account which my parent invested it, VSTAX, VGT, VOO (which I just sold spy for) AAPL, NVDA and PLTR, should I just use my brokerage to focus mainly on stocks?