I will do a FW run before for sure. I was thinking 20" tall mainly for that reason(power Failure). I have been thinking about it and going to change things up a bit. When I get it designed I will repost the pic to get you alls thoughts. I am looking at 14" baffles rather then 16" baffles less water but more room for tank water for those unexpected events of mother nature and the power company. lol