There is no need to use expensive perfumes to make your body smell nice. Good body hygiene, diet and wearing clean clothes are enough to contribute for pleasant body odour, so you don't have to worry about this matter. (Unless there is a problem with unpleasant body odour despite proper body hygiene, however there are ways to deal with it, and those does not involve using perfumes).
It's clear that you care a lot about this meeting, which is understandable in a sense, but you won't see this man until February, and yet you're already stressing out quite a lot about this meeting. Don't overthink about what will potentially happen and try to relax more. Personally, a few years ago I used this pranayama technique to calm down, that is: inhaling for six seconds, holding it for six seconds, and exhaling for six seconds. (Just focus on your breathing and feel yourself calm down). If you feel uncomfortable holding for six seconds, you can lower it to, for example, four seconds - the point is to not overdo it. However, you can deal with stress in any other ways - going into a trance, void meditation, just to name a few. Additionally for beauty, you could breathe in green energy and state an affirmation according to your intentions.
For the upcoming date, dress comfortably and nicely, take care of proper body hygiene, choose a nice hairstyle and (optionally) you can do delicate face makeup. Be yourself during the meeting, do not pretend anything. Above all, relax and approach the meeting with a calmer attitude, as this will make the experience more pleasent for you, rather than worrying about details that may prevent you from fully enjoying the meeting.
