So I am 18 years old, and I am looking to save up for a down payment on a house within the next 5-7 years. I currently have 4k in a brokerage account through Schwab. I have 1k in Sofi, 1k in Nvidia, and 2k in RKLB. I will be living at home for the foreseeable future, and will have very limited expenses. Should I continue to invest in my brokerage, or should I open up a HYSA and just dump my money in there? If I were to stick with the brokerage, would it be a good idea to keep investing in these types of stocks, or should I go low risk, and put it in VTI and/or VOO?