1) I'd recommend not tanking -- the hurt from going down (or finishing 5th/6th) is really bad for 1-2 seasons, whereas treading water will get you more revenues overall.
2) Try to steal games while people are still in the cup. I'd recommend just not trying at all in the cup (if you get a bot/IV/V team that's beatable, try to win it, but all TIE, all backups, don't throw league games for it). For that matter, I'd cut down to 1 starter at each non-training position, your 3 trainees (I'm assuming you're training single position PG, but haven't really looked at your roster), and then 4 backups (after the cup loss, probably 2 "real backups", one for SG/SF and one for PF/C and then 2 low salary -- 2k or so -- minute eaters that just play scrimmages to make sure your training & GS stays level).
So then your league lineup would look like (for both games, though different trainees each game, of course):
PG - Trainee/Trainee/Trainee
SG - Starter/SG-SF Sub/SG-SF Sub
SF - Starter/SG-SF Sub/SG-SF Sub
PF - Starter/PF-C Sub/PF-C Sub
C - Starter/PF-C Sub/PF-C Sub
And your scrimmage lineup would look like:
PG - Trainee #3
SG or SF - SG-SF Sub
SG or SF - Minute eater
PF or C - PF-C Sub
PF or C - Minute eater
3) Staff wise, cut to a level 4 doctor & trainer (you can get 12k salary for less than 100k auction price). Massage doctor will make sure your starters stay in 8 GS most of the season even on 80-85 minutes/week. Cut the PR to level 2 or level 3, as cheap weekly as possible, either NA or CI specialty don't add much to the purchase cost. Your preference, I'd probably lean toward Crowd Involvement (help with HCA). This should cut your Staff costs to ~25-30k/wk.