JG Power of Justice said that it doesn't expand the area of influence, so why you concluded this?
The more powerful you are, the more power your aura will have, it will have a stronger influence on reality. Here, since your aura attracts a certain reality around you, it's size doesn't matter, It doesn't matter if it's extend to x places. Your aura doesn't have to extend to your future love, for it to be able to attract that person to you.
Astrally, distance is not so much of a factor as in real life. Don't worry about these. You just program something into an amount of energy, and the more amount of energy there is, the faster it'll manifest, or more likely to manifest.
When we do magic, we have Energy rising, programing, and directing. When you program your aura, the directing part only consists of visualizing and feeling the end result, as if it's happening now.
Furthermore, the brightness of your bio electricity is directly proportional with it's strength. The more energy, the brighter. From here this is only my contexture, but the more bright the more extended it will seem. So you can extend your aura, to visualize it brighter, to have more power.