Few points.
1) Unlike reality in this game the best tactic is to just train three players and never train the others at all. Ok slight exaggeration but close to the truth. David Waring is a 19 year old 6'1" superstar drafted by you, while he may be way behind where he could be you can still make him a great player. Get a level 4+ trainer and just train pressure for PGs or passing for PGs. Make sure he gets at least 48+ minutes every week playing as a PG. You could also train Gene Darvey and one more player. For PG training the younger and the shorter the better.
2) There are three obvious passing offences that feature the PG heavily, motion, patient and princeton. Just read up on them in the manual. If two of your three best players are your PG and SG then go with motion.
3) You are in trouble this season with Wizards Warriors looking very strong. I doubt you can beat them and you wont have a good enough record for a bot promotion so I would try to save money this season and aim to try and win next season, unless you have some solid reason for thinking you can win.
4) Your arena sucks! Good to see you are building it now. Arena = $ = long term success.
5) You need a bigger roster. Just add a couple of VERY cheap players fro the weekly scrimmage and it will help everyone's game shape and minutes.
6) Ask more questions!