for the 180 to be reliable (and it must be for this airplane)you must use a perry fuel pump(tower hobbies,$30.00)an also an inboard electronic glo driver,(many on the market,I use jomar products EMS opto -isolated glo driver $40.00 ).I like the 180 becouse is lite and sounds scale with a 18x6,All depends on how you like to fly,if you like low and slow,go lite.if you like it high and wide weight is not to much of a concern.Good luck.