Hmmm you should be all good if you stick to natural light. @cameronsdiary and @arisjerome do pretty well on their natural light shit. I just like to bathe models in strobe. I like the aesthetic.
if you trying to bulk up could get some profoto sht like I do but kind of pricey, but buy cheap buy twice I always feel. That being said, a lot of photographers get great results from Alien bees. Some of my favorite photos i have taken are just from the flash of my Yashica T4 though. It’s more about the feel at the end of the day. Don’t worry about beefing up your equipment. You’ll probably get better trying to squeeze out all you can from your Olympus. Thats where the creativity comes in.