You can also just not give a F about your idols. You need the money more than they do. Lower their salaries if necessary, leave it at 1% satisfaction. They'll bowl and complain, but they'll thank you later when you're all swimming in 10,000 yen bills xD
Viewing post in The game is very frustrating but also I love it
Just in case if it interests you or someone else:
I made it and put myself into a positive spiral by taking out a 10.000.000 Yen loan from that landowner. The weekly loan payback was tough (~400.000) but it bought enough time to release monthly singles and become steadily more profitable. Just when I was going into the red solid it was all paid back and it seems like the toughest part is over from there.