I know this wasn't part of your original plan, but I've been using this setup for about 16-18 months. It works in just about any ground conditions and is light enough for me to carry over a creek if needed. I even took it up and down Buckthorn and a few other Colorado courses.
My problem with other cart styles is that I have back/hip problems and leaning over is often painful. I first used a stool because it kept the stuff up high, but even sliding a bag off my shoulder became difficult. I use some big clamps to hold the straps onto the 'forks' of the golf bag stabilizer (by the three red dots next to the towel) and rigged up a simple shelf to stop it from shifting side to side on inclines.
I love how interchangeable this is. I can add a bigger or smaller bag as needed and the bottom section of the golf bag holder
works great for strapping down different-sized coolers. I can also attach just about anything - stool, umbrella, I have an Igloo water holder hanging from the handle, and wrapping a towel around the handle works perfectly for keeping hands dry. A small speaker in the cup holder and I've recently added a putter pouch hanging from the handle when I don't need the extra water.
This pic is from my prep for Colorado.
I'm just delving into this subject of an engineer. I saw a lot of cool robots and it inspires me. Also read about biomedical engineering, used
https://paperap.com/free-papers/biomedical-engineering/ for that. So far I'm learning and any help will be useful for me. Every day I discover something new and I like it.