There's nothing wrong if you spend at least 3 seasons in D.IV. You can upgrade your arena to at least 12-13k seats in the mentime and prepare your rookies for D.III.
If you will be training guards, you can buy veteran centers or viceversa. Veteran inside players are cheaper than veteran guards, so most people prefer training guards. Guards are also more valuable on TL, though I predict that in 3-4 seasons, inside players with good secondaries will become the most sought-after players next to small forwards.
looks like I picked the right time to join BB then

I'll be training COleman and Delong to at least proficent in OD, then have them at 8 in passig and handling/7 in driving
is that a good sceondary big?
3 Time NBBA Champion. Certified Trainer. Mentor. Have any questions? Feel free to shoot me a BB-Mail!