On the Rm2k's Steam version, you can fit up to 1000 pictures on the same screen.
Another database objects (Charsets, Chipsets, Actors, etc.) the limit is 9999 items, that's a huge value to a Rm2k game so don't worry about it
Him: When can you have this ready to test?
Me: With the amt of work plus other things on my plate, 2 weeks
Him: Can you have it ready by Monday?
Me: IF I can give my other work to someone else AND don't run into any issues AND I rush, I MIGHT be able to make it next Wednesday
Him: So Monday then?
Me: Maybe Wednesday