Thanks! Thankfully my continuous loads never went above 850 watts about running a TV, stereo, computer, LED/neon decorations, lighting, and 4 box fans. The occasional drill (usually rechargeable, sometime plug in), or quick run of the shop vac peaks at 1700w, but is only for a few minutes. I have a small 2amp stick vacuum I use for regular cleaning.
Adding another 150w of lighting won't hurt. I'll add another 1-2 switches for lights. I run off a 15a circuit, with a 14 gauge 75ft extension cord, with 14/2 wiring in the shed fed from the inlet. I wish I could add a permanent feed underground, but with a patio, garden, and many tree roots, it is near impossible.
When I have a party, which has a fog machine, and PA system, I run a second 15a feed to a surge protector for extra juice.
Our house was built in the worst way, with the main panel dry walled around, and no access at all. Crawlspace is too low to crawl under where the panel is, and the attic has no access from above the panel. Not that it matters, since the 200a panel is as full as can be. Wired strangely too. Shut off one breaker, and the power to the bathroom, kitchen fridge, half bedroom, hallway, and 2 floodlights go out. Then we have one breaker that controls just one hallway light. We don't even have an outdoor outlet. The shed plugs into through the kitchen window and the front yard Christmas lights plug into the garage. Yeah, I know, time to call an electrician. I have twice. They said it's occasionally normal for a house in the 70's to be wired like this, and he couldn't do anything without a whole or most rewire, and ripping down the walls. We're the original owners, but boy, the electrician who wired this house should have been a plumber instead. Thankfully the wiring is deemed 100% safe, correctly wired, and never had a problem, so that's all that matters. It fits our needs, and the shed runs fine off a cord for what I have.