Tuesday I'm having my pressure washing equipment transferred to my new enclosed trailer. The company that is doing the install has a 12v soft wash system for $1100 that includes a 100 gallon tank. If I don't have room for the 100 gallon tank what size would be recommended? I'll have a 35 gallon chemical tank and I'm wondering if a 65 gallon tank for my mix will be sufficient? I'd like to be able carry my mix to the site and carry straight SH in the 35 so that I can mix more chems on site if necessary. Any recommendations you guys have I'd appreciate.