Shandy

Hello everybody I'm looking to diversify my garden metal work business to incorporate garden maintenance I currently use husqvarna for my saw and brush cutter use. However I have also got a mitox brush cutter that was gifted to me as a back up and to be honest it's never really been a bother except for a fuel line that split. Through my local dealer i have just purchased a 28mt select multi tool and a cs410x premium chainsaw and a 260bx premium blower..I'm aware that these machines are 40:1 mix as opposed to my huskys 50:1. So along with the whole ethanol situation what fuel and additives would you guys recommend ie b3c ethanol shield... Does it work or use the aspen 2t pre mixed ethanol free fuel obviously costly. Also do you guys think I'm mad at looking to move into garden maintenance and any pointers etc etc.