Couldnt find a way to delete the post, but i have managed to get the end result desired, here are the steps i followed in case anyone else with the same question needs:
1- Remove your Vengeance app.
2- Install the Hacked game from NOT ALLOWED!er (This hacked version only has IAP crack, no infinite diamonds/souls). Panda will install like three profiles, one of them being for ads, you have to accept them all (you'll later be able to completely erase all of them and NOT ALLOWED!er itself.)
3- Start a new game, buy all the towers and heroes.
4- With the game open, go to Filza, navigate to /var/mobile/Containers/Data/Application/vengeance/Documents
5- Copy that save_plist file to clipboard. Paste it somewhere else (somewhere not inside the Vengeance folder, as you'll uninstall it)
6- Uninstall the NOT ALLOWED!er version of Vengeance. Uninstall NOT ALLOWED!er. Uninstall the invasive profiles.
7- Using AppCake, install the clean cracked version of Vengeance.
8- Open the app, head over to Filza again, copy the save_plist file you saved somewhere else, go back to /var/mobile/Containers/Data/Application/vengeance/Documents and paste the file. Click Replace when prompted.
9- Load the game again. It'll be a fresh save with no progress but with the Towers/Heroes already purchased.