Kamara has joined on-loan from Sporting Kansas City.
"We took a bit of a chance with him," said Hughton. "That being the case we knew we could not play him for so long because the worst thing would have been if we had played him earlier, he pulls a hamstring or picks up an injury and he is out for the next three or four weeks.
"Kei coming in was very unexpected. We probably have gone against the grain with him. The big problem with Kei, and it probably goes against what we normally do and we should do, is he arrived on Wednesday, did his first training session with us Thursday and although he has been training he is well off with the pace of matches because he has had this break with the MLS season. I liked what I saw.
"It is as much about getting him up to speed now and he'll certainly give us another dimension."