I would not make a big issue about drilling anchors. Stucco absorbs and releases humidity all of the time, just like concrete. All you really need to do is shoot a little clear silicone caulk (the good stuff) into the hole before installing the anchor and that will keep the liquid water out and that it the real issue. What I would do (and have done) is install stainless steel anchors in permanent positions. I mount the upper anchor so that the pipe attaches directly to it. I place the lower anchor about a half inch below the bottom of the pipe and use a zip tie to attach them. This allows me to use the zip tie to apply tension to the pipe, keeing the wind from bouncing it around.
As for the smart strip dumb strip combination, I would rethink that. I also remember you talking about using DMX type cntrollers and even there, that could cause some issues. A DMX universe is only good for 512 channels and since a smart string or strip uses 3 channels per node, that means that 170 nodes will use up the entire universe. If your smart strips habe a 3 inch node spacing, your run per DMX universe is around 42 feet in total length. You may want to take a look at the controllers that we use here and there is a coop running for them now but it is close to its end. We use a protocol called PixelNet that has a 4096 channel universe.