My opinion is to pull DR up to level 14-15 no matter what other skills are first (that means first 2 seasons). This way you can experience double pops even in 21-22 yo players. I had DR17 while JR2 and OD3. Next week the speed of JR training was about 1,6 level (made pop from 2 to 4). You can make 5-6 JR/OD pops in 8-9 weeks even in 21 years. I go for driving first (when you dont mind high DR player). It looked i could save up to 6 weeks of training this way in 10 seasons. Not done yet but I strongly believe in it.
1 BBB, 23 Leagues, 11 Tournaments, 3 Europe Titles (SVK), 2 World Bronzes (SVK), 2 Europe Bronzes (SVK,FRA), 48 Seasons NT coaching