Likewise have raised beds filled w a mix of log chuncks and large branches, soil i dug out from the bottom of the bed before placing the logs in, and topped w bagged soil from HD. As the wood and other filler materials decompose they add nutrients and really hel ppl w water retention.
Look up hugelculture. It's made a world of difference in my water usage.
BTW, I have 7 tomatoes and ~12 pepper plants. Just sweet banana peppers for the kids and "super chili" for me. Depending on how they produce, I'm going to try my hand at hot sauce this fall. 6 varieties of tomatoes including black zebra, Chapman, early girl, grape tomatoes for the kids, brandywine and a mystery one...?