I have never used the bull and I don't know what your goals are, but for someone producing commercial cattle, there isn't enough good traits for me to overcome his weaknesses.
He has a 7.5 BW epd which is one of the largest 5% in the breed. That is combined with a -7.8 CED epd wich is the bottom 1% of the breed so that tells me his calves have come pretty large and they have needed quite a bit of assistance. He also has a -4.3 on MCE which is also in the low 1% of the breed so that tells me his daughters have had some calving difficulty too. On top of that he has a -.45 IMF score which is one of the lowest IMF scores in the breed. His data has some accuracy too as he has been used in 187 herds with 827 progeny with 319 daughters in production. His REA is actually very good and his performance data is just above breed average.
Now that is what her sire has done. It is possible that he was mated to a cow that has covered up some of his weaknesses and hopefully the daughter you bought was by a sire that compensated for these weaknesses.
You are two generations from Nuff Said with your heifer so you need to understand the population genetics in her maternal grandsire and her sire and offset them with a bull that can compliment your heifer.
Good luck
Redrose I would reccomend that you read this about 5 times then go look for another bull.
Brian