Yep. Welcome to the wonderful world of growing chili peppers
. I planted everything I could get my hands on in my first year, which actually wasn't that long ago (I'm in my 3rd year now). I had a forest growing in the living room before realized that I needed to pay attention to the "Days to harvest" date printed on the pack. You really need to stagger the planting to suit the time that they are put out otherwise you'll get overgrown quick. Look up your last frost date and count back a number of weeks for each plant. For example, this year I've started my Bhut's and Trinidad Scorpions and am still waiting on some Dorsets. These all take some time to mature and should be fairly stout by the time I can move them out into the greenhouse after the last frost date of Jun. 4. I'll be starting the Scotch Bonnets in a month or so. Now I'd have a real problem on my hands if started the serrano's right now because they only require 60ish days to harvest. My plant out date isn't for a couple of months. I'd be pinching and topping these like mad. Plus I don't have the room or light required for such a big plant.
Also, when you are germinating seeds you need to look ahead and account for all the space required when you pot up. 75 seeds in a germination tray looks small and manageable. Two months later, 75 plants in a 6" pot isn't. Especially when you only have room for 50. I'm only planning on having about 20 plants this year. Two or three superhots and few of the more enjoyable varieties like the Bonnets, Jamaican Reds, and Serrano.
If you find yourself with too many, you may just have to bite the bullet and cull a few. Yea you'll feel dirty after doing it, but that'll learn ya!