Try it all1 And test for your sweet spot too. Some people find best results with 1 spray of something, other people get results with many. It really does depend on the individual.
I’d grab some TUTH and IJ for sure - see how your gf reacts to increasing dosages. Since you are young and healthy you may want to buffer it with IS too. You’re probably producing a good amount of androstenone already - too much and you may weird her out.