I would keep Vágvölgyi and Orcaner as your trainees and sell/drop every other trainee in my opinion. Personally i feel like you could promote next season possibly. Things i noticed and what i think you should do:
1. Your best 7 players are all Forwards or Centers so it seems like you are lacking guards.
2. Your best 4 or 5 players all are young/young enough so you set for a couple seasons with keeping them at least.
3. Your perimeter defense seems to be the reason you lost a few of you game for it tends to land in the awful-inept range, which is very low for a III. league team in my opinion.
What i think you should do: With that 1.8million bucks you have you should try to buy a PG and an SG with really good outside defense, handling, and passing. Also try to get some with decent inside shot (Since you play inside tactics a lot) I would look for something like this:
PG: Age (24-27)
OD- Sensational
HND- Prominent
PAS- Prominent
Inside Shot- mediocre
SG: Age (24-27)
OD- Sensational
HND- Strong
PAS- Proficient
Inside Shot- Respectable
Also don't worry to much about their jump shot and jump range just as long as they are both above respectable/strong. If you play look inside then their jump shots and ranges wont matter as much but these two would still give you better offensive flow, inside shot (due to their passing), and outside defense. If you got two players with sensational+ outside D then you OD rating could easily go from awful-inept range to average-respectable range, which would make your team much stronger.
This is just my opinion though so please do what you think will work best.
Murray/Harris/MPJ/Grant/Jokic - 2020 NBA Champs