Wingman commands are crucial in this mission. Target the nearest Hurrim and store it in a memory pre-set. After the Hurrim start their attack order your wingmen to attack target type. After they're gone, pour ALL energy to the engines and order your wingmen to disable the 2 Xityar transports. Pour it to the engines again to get back to the convoy and order wingys to attack the TIEs and/or SB's. You have to be very fast, but it's really not that hard.
Every dog has it's day, but a dog with a broken tail has a weak end.