I am going to put together a 12v pump setup for laying sealer on concrete. This will be way faster than my pump up sprayer that I use now. I was considering a Devalan or Shurflo pump. I will simply siphon from a 5 gallon bucket of sealer. What pump would you recommend? I was think of something between 2.5 and 3.5 gallon. Maybe even put on a accumulator.