A few considerations
Pipkin, I'd like to offer the following comments.
I'd suggest that the 7th cusp/house does not represent the type of person attracted to us! That zone is where we project our expectations, how we are inclined to experience encounters with others, where and how we most acutely struggle to demonstrate our abilities and wishes with/for others. This can be a battle zone or an area where we choose to be vulnerable with others.
We seek a complementary partner (one who "fits" with ourselves) in terms of responding to us and growing/changing with us over the long term. A more shallow approach would be to seek a complimentary partner (different spelling, meaning) that reflects what we want to hear. It is in these two meanings of these similar words that the seventh house can be defined.
I'd note that the 8th house is the house of "unequal sharing.
The 9th house is the 3rd house of the 7th house. It is specifically "how we communicate with others." I personally do not use the 9th house as the 2nd marriage partner unless there are other factors that would point me there. I base this view on the fact that the progressive house meanings have a relationship to each other and are part of the "whole chart" environment. Now, if a marriage and divorce had resulted in a new awareness that effective communication was essential to maintain a relationship (and the lack of it was responsible for the destruction of the prior marriage) then I might look at the 9th if it had an association with Mercury or Venus or Moon (as connecting to thoughts, talk, harmoney, basic needs and responses).
If you are progressing a chart using "secondary progressions", then by all means progress the cusps and continue to focus on the progressed 7th angle and its changing signs, rulers and resident planets. My personal approach is to use Solar Arc progressions of the planets and continue to use the natal chart's structure as a reference point.
Dave.