Just my opinion for whatever it is worth/costs you, I would not take any buck fawns from any of them.
I would instead take a doe fawn from each of them and use semen purchased at a later date to breed them with later on to keep building the pedigree of each doe deeper and deeper.
I would select specific bucks to buy semen from later on based on, (in no particular order) pedigree, looks, marketability, line breeding preferences and score.
Again just my opinion since you contacted me and asked me to take a look at this for you.
If this is not the answer you were hoping for then let me give you the answer to what your post specifically asks for.
I would take doe fawns from Brandy and Patty.
I would take buck fawns from Cassidy and Doralee.
I would sell half ownership of the buck fawns with the deal being they stay on your farm. Then you can use them to breed with as you have said your plan is to do. The reason I would sell half ownership is to get some cash out of them to buy semen and females with to use to build your herd even better.
Good luck Jared. And thanks for your confidence in my opinion.