First, figure out if you can get your funds into a Roth IRA so it can grow tax free (google Backdoor Ira if your income exceeds the limit or depending on the amount you’re transferring). Most brokerage at this point cannot give you direct access to cryptos, you can only invest in GBTC or equities that are exposed to cryptos like ICE or SQ. I suggest motifinvesting.com to build a cheap diversified portfolio that is exposed to crypto. I’ve seen ads for bitcoinira.com but have no experience with it to give an honest opinion. The question is rather complicated to give a simple answer, it all depends on your financial situation. I have a background in accounting and finance so reach out to me if you want to discuss more.