There are many various considerations that will make an aspect stronger or weaker. Generally, the best aspects are within three days of the exact aspect, and better if applying toward the exact aspect rather than separating from it. Another great thing is if one planet is moving retrograde while the other is moving forward. Yet another powerful thing is planetary synchronization, where there are multiple planets at or near the same degree, and close applying aspects at the same degree are also gravy. These same guidelines work in the negative if the aspect is a square, opposition, or quincunx from Saturn.
Planetary geometries are also very important.
I'd want the positive geometries to outweigh the negative. Another thing to look at, is what geometries and aspects are formed between the founder's or founders' charts and the business chart. If anyone wants to hire an astrological mercenary to help you with such matters, let me know. I think i can probably find one for you. And stay away from Saturn, because, as we all know, Saturn just plain sucks.