Strategy for investing, roth, brokerage account and hysa

How is this strategy? Would like to buy solid longterm hold stocks in a Roth which i already have. Do more short term or etf/dividend holdings in a brokerage account (which i do not have yet but open to ideas , was thinking the cash management account in fidelity, or something else through fidelity since have roth there or is it bad to have all in one place?) Keep cash on hold in hysa. Any advice is greatly appreciated 👏