Hey
@PepperCaper , it's a good thing that you did some rudimentary analysis of your soil and identified it as not being ideal. I've never had to amend rocky, clayey or otherwise difficult soil so I can't speak from experience if that's the road you want to take, but here are some tips/ideas to start you off on the right foot:
Regarding your approach to growing, keep in mind that you have choices. You can choose to grow in that soil after amending, you can build reasonably deep raised beds and add soil that you've purchased, or you can choose to grow in containers (or you can choose to try all three just to see what happens). Personally, if you do decide to go the in-ground route, I'd still take one or two peppers that you really want a harvest of that year and grow them in decent sized grow bags and treat the in-ground as an experiment for the first year or two.
I don't believe that simply amending clay with homemade compost is a good route to take. A primary issue with clayey soil is drainage, so your amendments should include sand and larger particle matter that would improve drainage. Compost also retains moisture. So when considering soil amendments, do some good research and see what would work best for what you have.
That being said, you're definitely doing a good thing with making your own compost. Kitchen scraps are great, but they're nitrogen heavy and contain a lot of greens. A really good, healthy compost idea is to take your fallen leaves in the autumn and mix them with fresh grass clippings, and compost them. Remember to add water and turn the compost from time to time. It's a great compost, doesn't smell, and doesn't cost anything. Not advising against using kitchen scraps, but simple leaf-grass clippings compost is really dynamite. Don't throw away what you've already started, just do some adjusting along the way by adding some browns if you need, and then pick up the leaf-grass idea in the fall.
Last, if you do decide to order topsoil, please have it tested for contaminants and heavy metals before acquiring it. About 10 years ago I had a nightmare in the form of what was supposed to be healthy organic topsoil that ended up being full of lead.