If I get a trailer, 21" Exmark, 36" Hydro Fixed Deck WB, 48" Gear Floating Deck WB, 2 Stroke Trimmer, 2 Stroke Edger, 2 Stroke Backpack Blower, and 2 Stroke Hedge Trimmer for next year, what all should I have in order to prevent downtime and run affectively? What should I have on my trailer as far as tires, parts, compressor? What should I keep extras of as far as belts, blades? What kind of oil shoud I use on those mowers if they have 6HP Kaw, and 2 15HP Kaw engines? Why is it so much cheaper to use synthetic? I'm just trying to absorb as much info as possible. Thanks for any help you can give me.