If you set up the tripod often, invest in telescoping legs with levers, not collars. Usually these legs are square. Press the lever, pull the leg, and out it comes. When using telescoping tripod legs, telescope the fat legs first and work your way out to the skinny legs. This will create a more sturdy tripod on occasions when the legs aren't fully extended.
Dollies are useful on smooth floors only.
Small castors seem to amplify imperfections in the floor's surface, so buy a dolly with the biggest diameter castors you can get. Most allow the wheels to lock, keeping your dolly from careening down inclines, and a few allow the wheels to be locked in one direction, allowing you to dolly the camera in, then back up directly, without traversing a little loop as the castors change position. Larger dollies even have cableguards to sweep away mike and camera cables that would give your image that bumpity bump look. These systems actually work, and are a lot easier to carry through the jungle than a tripod. Let creativity be your dolly.