If you can max out your 401k or max out your IRA and then save an additional 20%+ of your after-tax, after-retirement contribution, good things really start to happen. If one is looking for earlier financial independence, such as retiring in their 40s or early 50s, it may be a good idea to skew towards more after-tax savings and investments given one has to wait until 59.5 to withdraw from their 401k or IRA penalty-free.
Partnerships and S corporations aren’t subject to the rules for new grouping, addition to an existing grouping, or regrouping. Instead, they must comply with the disclosure instructions for grouping activities provided in their Form 1065, U.S. Return of Partnership Income, or Form 1120S, U.S. Income Tax Return for an S Corporation, whichever is applicable.
I have only dabbled in drop-shipping before when I had an eCommerce platform 6 years ago or so. I think it is something that you could do on the side, but you would want to do in depth research on the industry you want to get into before setting up shop. It may be a little less passive up front, but over time you could take your hands off the wheel.