Ok so another update :)
I pretty much decided to just work with 2 lines. A shortfin line and a longfin line.
The longfin line I'm going to try to achieve is the one I've mentioned on this thread a few times. And that is a light MG line. I will work with longfin HM and longfin DT. I already have an idea on how I'm going to try to achieve this line.
Now on to my shortfin line. I just had a HMPK pair spawn. The parents are both MG with a light black scale outlining. With this line I am going to try to achieve a MG color with significant black scale outlining. I will most likely cross any MG fry with black scale outlining, to a pineapple HMPK to try to get MG's with the dark scale outlining of a pineapple colored betta. :)