Who would you rather be coached by? Alberto Salazar or Brother Colm?
Either will come to coach at your running club or track so you don't have to go to Oregon or Iten. Also you are free to train in your favourite brand of trainers/sneakers spikes. You will not be limitted to Nike or Adidas.
You are training for a flat 5k on the road.
The only PED you are willing to take is tea and/or coffee.