DSC, Welcome to the Breeding game! Your set-up is enviable to say the least.
I have sometime on my hands so here are my pennies:
Mephisto: IMO you can't go wrong with Meph gear. The vast majority of their cultivars are head and shoulders above the rest of the auto market.
Sour Stomper - I hope your one seed works out for you. Meph has used this strain in a number of crosses, including but not limited to:
- Double Grape: Sour Stomper x Grape Crinkle
- Forum Stomper: Girl Scout Cookies Forum Cut x Sour Stomper F4
- Skystomper: Sour Stomper F4 x Auto Skywalker F4
- Sweet and Sour: Toof Decay x Sour Stomper
- Sour Patch Bears3 Bears OG x Sour Stomper
Duch Passion:
- Auto Lemon Zkittles - you might want to try and find a fast finisher because the XXL I've grown from DP tend be closer to 100 days than 75.
- Auto Glueberry O.G. - Classic strain that has been around the auto market forever. Haven't grown it personally.
NightOwl:
- Galaxy Brain, Grizzly Crinkle, Sour Gummy Bears, Pino Noir, Cosmic Apprentice, Sweet + Smelly - really can't go wrong here. Nightowl has a google sheets doc that lists a lot of detail about most of these. Click here
RocBud: (one of my favorite breeders)
- The Fringe , Magic Cookies Auto(Fem) V1.2, Passion Punch- I've grown all three of these an enjoyed them all. The first two are going to lean toward baked goods (cookies-ish) and the Passion Punch was super tasty but grew really fat airy buds.
Rando Vials:
- MBAP X 3BOG - This sounds like a great cross! Kinda like a backcross with the MBPA being (3 Bears OG x Ripley's OG)
- BLACKBERRY - If I had to guess, this is the Blackberry Kush from EU (FastBuds or maybe Seedstockers). I've grown the FastBuds blackberry a number of times. Usually it turns a very nice dark purple, but seems to lack potency.
Suggestions for F7 auto flowers that are worthy of breeding - There really aren't too many auto breeders that have worked lines that far. 100% agree with
@blue that Gnome is where you want to look. I have Anvil and Coal Miner's Daughter available but can only ship within the US (Sorry!!).
That's enough from me! Looking forward to seeing this project blossom.