The advice above about not opening a store is definitely sound, but I'll play a bit of the devil's advocate and just say that I think its a matter of what your goals are. I put most of my parts into storage for now because the time to pull orders was starting to cut into family time and causing stress. Maybe one day I'll bring them back out, but for now, its not worth it. That said, I still have a small inventory that I enjoy adding to and selling. I was booted from Amazon last fall during the "purge" and sold most of my sealed set inventory to some nice members on this forum, so I really enjoy having BL to still be a part of the LEGO market. Perhaps most importantly, the profit I made from my store this past year was enough to cover my personal LEGO purchases over the year, which was the goal from the beginning when I stumbled down this rabbit hole.
I'd suggest that if you are really interested, you start small, part out a few sets sets, figure out what organization works for you, keep your prices low to make some sales and attract buyers, and see if you enjoy it or not. Of those two sets, I didn't look at the overall part out values, but the dinosaurs in 75940 aren't highly desirable but at least give you a floor for your value. 43181 has terrible mini figures so maybe not a great one to start with - like 10 sales total across both in the past 6 months.
Short version: if you want to have a small hobby to enjoy, go for it. If you want to grow wealth, take @raindog's advice and just invest.