I don't have Obers but I'll take a stab at it
The dam line has some nice things. The buck's dam Priscilla and both her sire and dam have earned a Superior Genetics designation. The SG means they are in the top 15% of their breed for milk, type, or both. In addition, the dam's dam Lucita has a national Top 10 lactation record and is a permanent Grand Champion.
The dam's sire is a +*B and USDA Elite. The + means he has at least 3 daughters who have earned a *M by making at least 1500 lbs of milk or 50 lbs of butterfat. The *B means his dam and paternal grand-dam both earned *M. USDA Elite is for bucks in the top 5% of their breed for production. So there's lots of milk and butterfat in the dam line.
There is not as much info as I'd like for type in the dam line. The dam Priscilla had an outstanding score of VVEV 88 (89 is the highest yearling score) as a yearling, but no other appraisals. I like to see the scores on the 4, 5, 6 year olds to see if they hold up over time. The grand-dam, Lucita, has a good score of VEV+ 87 as a three year old. I'd like to see a higher score on her udder, but then I also like to see good production, which she has.
The sire's side is weaker. There is no daughter info. on the buck's sire. Personally, I'd want to see what the sire is making before I use his son. The sire does have the *B so we know he has some production behind him. The sire's dam Coocha earned her *M and scored VVA+ 84 as a yearling. Certainly acceptable as a yearling but again, it would be nice to have full info on this doe to see how she holds up both in milk & type as she ages.
So, on the dam's side, excellent milk, Superior Genetics, good type but would like more info. The sire's side, what we have is okay but not enough info. I don't see any reason not to use him.
I don't see any info on your does but those are solid pedigrees. Tonka-Tails & White-Haven are top herds. I've shown many times with Tonka Tails and every doe they have is a "Wow!"- very correct all around with georgeous udders.
