Love these questions! I came here looking for confirmation of what I've already done move some of my retirement to self-directed accounts (SDIRA IRA-LLC - if you don't recognize those acronyms check out https://www.401kcheckbook.com/checkbook-control-retirement-plans/checkbook-control-ira/). But, I'm not ballsy enough to go all in. I just put some pre-tax money in and some Roth money using a Solo 401K. I'm to scared that I got in too late and that we're in a Bitcoin bubble...