Greetings Steve,
Welcome to Pherotalk! As Alpha said, Ammo is an excellent product for your intended use. I am currently in my early 20s as well and have used all of the consumer products that are available these days. Ammo is definitely the best all around product, especially paired with Instant Shine! I also recommend my personal favorite, Instant Gentleman, which gives off that older, respectable, sexy vibe. As far as IFM goes, after doing a little research, it seems like A1 is your best bet at replicating the IFM effect, as this was the main component of IFM. It’s not exact, but with some socials and some experimentation many have found a pretty spot on clone of IFM. Here’s a great thread about A1:
Good luck with your future experiments!