Wow, nice work so far!
I would get Jump Range up to Strong (although that's more of a personal preference).
As for making him an SF, personally I think he is a little too short to be effective, 6'4" to 6'6" would be better in my opinion.
However, depending on your financial capabilitys (I am assuming you currently have a level 4 trainer), you could upgrade to a level 5 trainer. This will allow you to get a few extra weeks of training in per season without costing a whole lot more (probably costs 400k more per season).
I think with the higher level trainer, you could train Inside Defence up to Prominent and train Rebounding up to Respectable in 1 season. I don't think 22 is too slow to train, it would be too slow to start training up a player but you already have a good player here so continuing training is fine.