For what you are doing, I pretty much think a tripod with your camera and bellows set mounted on a focusing rail, is about the only way to go. I helped with a project around 25 years ago using a Hasselblad with their makro lens. Once the correct subject magnification was realised, everything became locked, then you simply focused with a simple focusing rail. really rock steady tripod and either waiting for the wind to drop, or bring along your own wind shields.