Welcome aboard!
The one aspect I'm a bit unsure of is Mujeeb/Dorf.
Mujeeb is a c. 50 average player in BBL historically and priced below that. He plays Thunder (bowled out for 15), Heat (historically abominable against spin, albeit with significant personnel changes this year), then Hobart (ave 67 against them, albeit a small sample of 4) and a double (Sixers x 2 - not ideal, but he gets two shots at it, and averages 48 against them).
Dorf seemed to often lose overs last year, and as a somewhat more containing than wicket-taking bowler, it's more important that he bowls 3 to be eligible for that ER bonus. Last season his over counts were: 2, 4, 4, 2, 4, 4, 4, 4, 2, 2, 3, 2.5, 3.5. That's only 7 games of 3.5 or more, with 5 games of <3. He did quite well to take 16 wickets (albeit he still lost overs despite taking those wickets), but I wonder if he's nailed on for 8 overs this double or not. Scorchers also play the Sixers and Hurricanes, who are strong sides (equal favourite and third favourite to win the BBL) ... the Scorchers draw actually opens up a lot after that, but I suspect Dorf is someone that won't be held that long anyway. His domestic form is decent (see below), but I wonder if you can't get better value out of that trade.
https://www.espncricinfo.com/player/jason-behrendorff-272477/matches