No need for distilled water for the rinse. Tap water will work fine. I've never dyed with a heated solution, all my dying were at room temp. Always follow mfg recommendations.
We used Trichloroethylene vapors for degreasing. That's probably not allowed anymore. On particular dirty parts we used a caustic hot bath to degrease, but you really had to watch it. Aluminum is very reactive to caustic agents. Aluminum parts that needed to be activated were dipped into very strong nitric acid. The really nastic stuff is nitric/hdrofloric acid. We used to mix that stuff up, a deep orange smoke would come off of that. Very scary stuff!!!
A major consideration is anything in the imediate vacinity will be etched by the acid fumes. That's why I will not setup to do color and/or hard anodizing at home/garage. Too much liability from the acid fumes. All my tooling/vehicles in the garage will end up with a layer of rust. If you have separate workshed with drain to isolate the fumes, then that would OK.
Edit: If you have the time, visit a plating shop. Note that everything metal in the shop will have some degree of corosion. A light to heavy layer of rust will be on almost everything in the shop, including the structural beams if any.
Note: Please use extra care when handling 99% reagent grade acids, used to delute to % needed. I would alway use gloves and safety glasses handling reagent grade acids.
Avoid the wearing cotton clothing when working with acids. You will end up with holes from small splashes.