1. FL
2. girlsTable

You can almost directly compare your current total speed bonus with the money needed. If you increase your bonus x1000 you will jump up from k to M, from B to T, and so on. But money building level is capped at 50 and you only get about 3% increase per level anyway, so don't expect to multiply your income by x10 with filming your girls for weeks. If you need x1000 the money you can make in a month, for a girl, you lack x1000 total bonus. Leveling the money buildings might save you a x2, so you still lack x500. Increasing reset bonus is additive, so to get a x8 you actually have to increase it from your current value to 8 times the current value. Increasing warp bonus is multiplicative, so buying a x8 is a x8. The alternative is actually waiting. This is an idle game after all.

It should be noted of course, there are some boosts in money making, namely if you unlock better and more buildings with your skills or simply use more energy on money making. You can expect maybe a x4 by changing your energy to better buildings and a x2 by activting most of the buildings instead of only the most effective ones.

And, if your game bonus is not high enough, skill leveling might be your limitation.

If you do a reset run, you typically complete all girls up to their first fake it that is blue (10 minutes). After that you have four girls to choose from. Complete the girl that needs the least amount of fake it minutes (red 30 minutes, blue 10 minutes). You will "slow down" if your filming times approach the fake it times. Stick additional fake its in these time slots to unlock higher girls and complete the first few scenes of them. If a scene is worth the effort you can see in the table above. It might even be worthwhile to complete Lola, if you can complete the first few scenes of a higher girl this way. Your reset run can stretch several days, but you might want to estimate a ratio of bonus/hour, so you can answer yourself, if it is worthwhile to wait an additional hour to complete four scenes or reset now. (No it is usually not worth the wait time, but you might want to do some challenges or training too.) The ratio grows with higher girls, but only about as long as you can stick fake its into filming time slots. Even with very, very high total bonus, the filming time of the later girls will be several hours and days, and the bonus stops growing after twins and increases less and less relative to the previous girl.