From what I have learned about water so far, and I admit it isn't a whole lot, my local water supply might be better suited to some of the darker ales, stouts, porters etc. My water is fairly hard and alkaline. If I were to brew a pils, for example, I imagine I would have to use another source, either purchased or treated with an RO unit. From what I have been reading, my water may, or may not be fine as far as mash extraction efficiency without modifications to chemistry. Seems the only way to determine that is to try. I'm somewhat comforted by the fact a renowned local brewery, Russian River, uses my city water. What they do to it after it comes from the pipe, if anything, I have no idea.
I still don't know what particular mashing method I'll go with. BIAB appears simpler with fewer vessels to dance with, but for doing a full up 5 gallon brew means handling and moving a fairly large kettle with a considerable weight in hot water/wort unless you are set up with pumps which adds to the complexity. A chiller looks to be a pretty simple piece of gear to make, and I have some large galvie tubs to hold ice water.