OK lets clarify something. Putatives can pretty much pair with anything. What you choose depends on what you want the mix to say about you or what emotions you would like it to evoke.
The putatives you mention have been around a long time so we know they are not duds. That being said we know they will have some effect but putatives are not stand alone products. They are used to create mixes and steer existing mixes to achieve a unique vibe that fits each persons needs and personality. While we know the general character of the putatives its import for each user to test to see how that putatives reacts with their natural signature. That is why its hard for members to tell you specifically what to get. Pheromones are not one size fits all. If you not willing to put some effort in and test a little then stick to the consumer products for now.
I do understand not wanting to dish out money for something your unsure will fit your needs though so in general here is the character of each putative you mentioned.
P75 signals strength and masculinity. Its not sexual like anone but more of a manly signal that speaks of a males character strength.
P74 is not beta in itself but paired wrong or used in the wrong ratio it can go that way. It helps influence a feeling of harmony and a synchronicity, a bonding of sorts
P79 is an intensifier. It seems to help intensify what ever else your signaling of feeling. Good in sexual situations but not sexual in itself. Can work against you if what your feeling is negative as it will intensify that as well. So basically its going to bring out your natural personality more sharply and that of others.
Now how to wear them basically >>>>>
Of course first its important to test each one alone and find a workable dosage and see what the individual molecule does for your personality. Thats the only way you can truly grow to understand them and know if they fit your needs.
So knowing what the general character is of each and knowing what the character is of what you have already mix wise you will use putative to steer the signal towards a specific vibe you would like to project as well as a certain result you would like to see.
Lets do a few basic examples keeping in mind you natural personality and signature will vary results a little…
Ammo your basic sexy suave masculine attraction.
Ammo + P79= sharpening of the above traits as well as your natural traits.
Ammo + P74 = added connection to that sexy suave masculinity. Because Ammo puts out only a mildly sexual vibe (sexy and sexual are two different things by the way) P74 can overshadow that and put you in the friends box. Something more like Ammo + P74 with a 1/2 a shot of TUTH to enforce the sexuality of the mix would be my suggestion.
Ok lets move on to IO
IO + P79 = annoyingly intense LOL
IO + P75 = Hmmm its hard to come up with a word but popular good old boy vibe is what i get. Probably good for hanging out with the buds at the game or something.
IO + P74 = Compatibility
Just wanted to add this cause I see you have P83…
IO + P83 = dirty talk 
Then you move onto to building on those vibes in the direction you want to go always taking into account the environment you plan to use them.
For instance
TUTH + IO + P83 + P74 = Sex appeal, sexual compatibility & spontaneity
Very nice combo for dates parties clubbing. I think this one would work well for you. At work I would lessen the amount of TUTH you use and replace it with P75.
This is why layering singles along with other mixes is great. If you have a handful of favorite putatives you can adapt your mixes anyway you like and change that vibe to fit your life and needs.
Now remember you have a natural chemistry and personality and thats going to affect what I just built above and this is why its so important you take the time to get to know how each putative and mix works for you and why its so hard for us to just tell you “Go get this or that and this will occur”
You gotta do the work but in my opinion once you understand them more its great fun and you can greatly influence your surroundings and how people interact with you how ever you want.
Tisha