Adams scored only 3 league goals less than Ings last season. So I don't know why you are being so dismissive of him.
I don't write off players based on the league they have come from.
Did you write off Mane, van Dijk, Pelle, Tadic, Wanyama etc because they didn't have Premier League experience?
It isn't the Premiership and hasn't been since 2007.