Actually tugging in feeders, considering the bends, will be tougher than you expect. I'd lay on the lube and upsize the raceway one bump. Further, I'd really work on my strapping scheme at every direction change. Lastly, I'd make up my pulling head with extra special care.
You might well consider getting MC - coated? - suitable for exterior use.
If it needs a beauty sheath after the fact that's not so bad. Otherwise, a mere paint job could make the MC blend in. While hefting MC may seem tough, going to Aluminum feeder conductors really cuts weight.
