My Holstein heifer will calf for the first time in Aug. This gal is our family cow. What size stainless steel bucket should I get. My husband said two 2 gallon pails might be more useful than one 3 or 4 gallon pail. Neither of us has previous experience with this, so we need your opinion. Also it is easy to find 1 gallon pasteurizers on ebay, but I have been shying away from purchasing anything other than a 2 gallon for time efficiency. Is this silly thinking? Thanks for your input.