Hello D_Urbmon, I am a long time lurker who enjoys reading your posts. I'm very excited to see how your first breeding effort turns out, and I'm going to use my first post here to ask you what did you think of Peak Seeds BC's unlisted Sweet Skunk x C99 cross.
I know you recommend the Sweet Skunk, and would love to hear from your experience, how the SS x C99 compares in potency, yield, flowering time to the straight Sweet Skunk.
Comparing SS x C99 cross to straight SS might also be of interest to you, considering you recently pollinated many strains with a C99 male, it might help you understand what C99 does as the pollen donor. And my guess is your first breeding project will turn out great: think of Vic High's legendary Killer Queen, Space Queen had C99 males, and then TGA Subcool seeds (a breeder you also like) typically have C99 male-side contributions via Space Queen, etc.
Chances are you are going to find some stellar stuff in your crosses, especially that SkunkBerry x C99... that's going to be something because all three components have been highly worked by Peak's MikeJ so instead of a "polyhibrid" you have an F1 of sorts. And the SBC's F2's are going to be spectacular, think of phenos where SS's NLxHaze ancestor combines with C99's own NLxHaze component, and Blueberry combining with SS's Grapefruit side, it could be epic.