Unfortunately, like Cozmic said, with his training being switched, there's no way to really say how "good" he is. For example, as an SD breeder, I watch for my horses to be 333 on week 7 and cull anything that doesn't meet that benchmark. So at first glance, seeing a stud that was 322 on week 7, I wouldn't use him.

It's most likely going to be up to you to breed him to ten E or W mares his freshman year and see if he gets on the LBs (a stud has to have ten foals before he'll show up on the LB). If he does, you might be able to ask more than 0 for public breeding/straws, otherwise he's not going to get much interest. There are a TON of SD ISH out there and even the top LB studs usually don't get more than 10k per public cover.

Best of luck. He may surprise you, you never know. The fun of SD is that even if you have to use outside broods to hit the 10 foal mark, they are relatively cheap at 2-5k per mare.