I live in Orange California and have a vintage 1970 33,000 gallon Sunset Concrete / Plaster pool which needs a facelift. The pool is currently equipped with a below deck DE filter and skimmer. I would like a recommendation regarding new pool finish surface i.e. new plaster vs pebbletec, etc. and what water treatment / filter system would be the best. I am prepared to demo the existing system and replace as required. Thanks...