You will want to research dehydrators...many choices. If your oven will go and hold a low temp, like below 160, you could use that...or go the solar route. Start checking yard sales or ask around...friends and such. People get them and use them once or twice. I paid 5 bucks for my first Nesco.
I made the one we now use. It holds 10 half sheet grids.
Coffee grinders are another yard sale score. I even have a couple back-ups as i make my own spice mixes. (a tbsp of dry rice will clean them out).
My thumb is not green when it comes to peppers. I get couple pounds but usually smoke them...trying again this year with more varieties having given up in the past.
I stock a dozen or more pepper and paprika powders. (the good stuff) Smoked, sweet and hot. Making your own is a fantastic idea and so fresh. As mentioned, i suppose a few varieties would be better than others but any pepper you grow would work.
I use MountainRoseHerb for most of my
spices...https://www.mountainroseherbs.com/catalog/herbs/bulk