Currently, I play the game from scratch and keep all the special girls in a cage. Maybe, just maybe I'll share my save after that with some money and some items on stock (that would probably last for the whole 50 days). Since you can change the day (save editor), I could set the day back to 5 or in the earlier beginning of the game. I have 5 of them so far, I think there are 6 (Am I missing a girl?).
EDIT: If you want to change the values of the items with saveeditoronline instead of cheatengine, search for
"m_UnitList > XX > m_Count" with CRTL+F for searching. XX equals a number from 1-100+, so don´t use the whole line to search, just
> m_Count then edit the value in ( ) to a value you like. Still 70+ times to do, but IMO faster then cheat them with CE.