Single position training or 2 position?
203 is no big man. I trained a 208cm, which is still not that tall, in both OD and JR (when there was no defensive switch) and I can tell you it's a pain. For a 22-23 yo, it took me 5 weeks to pop in OD and 4 weeks JR + 3 weeks JS for a pop in JR.
Neither playing run n gun would pay of if Avengers chose to play a zone..