For the Mods being requested: Go to the developers website, HHS+ Forum, and Mods subforum. There are several posters who have made mods compatible with the 1.10 version. Download whichever mods you choose, then unzip the folder to the School/NewSchool/Mods folder. Finally, when you start your game, select the modules you want to use. IE Mods/NewModName
All special characters with a specific quest line (Hooters, Perrier, Coppers and such) have a much higher hypnosis resistance until their quest line is completed. If you don't want that extra resistance in there, go to Map -> Help & Options -> NPC Quest Protection and disable it. Beyond that, I don't have the specific formula, but it appears that your subject is going to be more receptive to hypnosis the higher their loyalty to you and the lower their willpower. This can also be influenced by your appearance, as well as their gender preferences, in my experience.
To increase corruption, once their loyalty is high enough to allow you to trade items to them directly, you can start by giving them dildo/onahole. To raise their lust, give them porn. Each night they use the items, their corruption and lust goes up, willpower and inhibition go down. If you don't care who is getting the items, put a pile of them at the entrance of the school. As students become more corrupted, they'll pick up what they will use.
Increasing your money made passively: Increase your student count and education stat, as well as your reputation. (Monthly Pay). For weekly pay, Install Spy Cams (can trigger girls bathroom and changing room on the first day, Sports area after starting Cheerleading club with at least 3 Female/Futa students at practice, Computer room 20 days after it has been opened, Gym depot with student corruption higher than 15, Basement after doing the Samantha Keller quest chain). With Annette living with you, each time you catch her with her webcam show increases your weekly rent by $25.