Hey OKC...looks like your team is TOO young. The way training works in this game, you can only give meaningful training to a few players at a time. My idea would be to pick up some 30+ veterans on the market who have decent skills at their position, who can help you start winning while you're training some younger players. You should be able to get some skilled players in the $6-8,000 salary range.
A level 4 trainer seems adequate at this level. I'd pick out 4-5 younger players worth training and just focus on them. I trained defensive skills first.