Id just buy whats in the video, since he made it dead simple. The only "hard" part is picking the flow/pressure for the nozzles. One thing that people constantly over spend on is "bulk heads". They should be a buck or 2, but some people get away with charging $10-20-$30. If you have a local fish/hydroponics store, you may be able to get everything but the pump for under $40 easy. The pump is the only expense part, they are $20-120 depending on the model. But since you are using them for just misting and not boosting house lines with a high flow rate, just about any membrane pump will work if its gets to 40-60psi. Not to throw you off course, but some have even rigged up really cheap submersible fish pumps and found low pressure nozzles. The only down side is much bigger dropplets, so its more of a spray vs fine mist.
Once you get the hoses/fittings/nozzles FROM THE SAME SUPPLIER, its bone head easy. About the only pit fall is the knack to install the fittings. You cut the hose, shove it in the fitting, then complain on the interwebs that it leaks. Most people forget the final step, yank on the hose to set the seal so it doesnt leak.
On the video that is a very small pump, but its very inexpensive and fine for maybe 4 nozzles(i only use 1 nozzle per cage). I happen to fall into a big mamajamma on crags list from someone throwing out an "old" RO system that wasnt working any more. Its complete over kill and could fill a bath tub, its got 3/8" fittings, but luckily had reducers down to the normal 1/4".
As far as controlling it. Best bet is only of those 24/7 "utility" 3 prong timers, not the "lamp" timers. Those will cut all the power, the lamp timers do "funny" things when off. As for the "smart" switches, you either have to have a control hub, or the app constantly running on your phone.
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