mine should be shipping on monday as well. i hear that the 1515 1y will be a tight fit if it fits at all. everyone in the FE rigger world is telling me to go with the UL-1 set-up. they are getting 55-60mph in similar riggers and it is cheap. i am thinking about a feigao 6 or 7xl because i allready have a cc240 and would like to turn at least a 45mm prop. as far as the outrunners go, they stay pretty cool if you just use a water cooled mount. also the out runner may be worth checking into because they put out huge amounts of torque and can turn big props. the turnigy 180 marine esc gets mixed reviews. it is pretty solid but some have problems with the low voltage cut off (i didnt but i do with the turnigy 120 so i just turn it off). i do know that my ul-1 picked up about 5 mph just from removing the turnigy 180 and putting in a cc 240 (timing was set the same). mine just didnt seem to deliver full power. if you are trying to out run a 21g nitro do your self a favor and get a good esc. if you decide to use a cheap one get the hi-model 200 and add a water cooling plate, just make sure not even a drop of water gets on it.. also good batteries are where it is at, thunder power!!! if you do go cheap (turnigy) get as high output as possable (i think 30c is turnigys highest) and as big a pack as possable. remember that the c rating is based on the capacity of the pack (30c of 1000mah = 30amps, 30c or 5000mah = 150amps). the battery is more than the fuel tank, it is the size of the carb as well....
if you need any help or suggestions with FE that is really my specialty. i am just getting into nitro but have built about 40+ high end FE's and allready spent the money on my homework. cheap motors are ok but dont skimp on esc and batteries. also if you really want a nice set-up that will last the neu's are worth every penny. for $169 a 1415 1y would make this thing rip.