You might check out one of the commercially produced units such as [url]https://www.farmtek.com/farm/supplies/ProductDisplay?catalogId=10052&storeId=10001&langId=-1&division=FarmTek&productId=536005[/url]
I have no affiliation with farmtek or the company that makes this unit. I've never even used one but I saw it in the farmtek catalog and thought of it when I saw your post.
Gardening is mostly an issue of your enthusiasm holding up until you get used to the work.