Striker KaiKai has made two appearances for the Reds, while midfielder Boateng has played just once.
This is the pair's first taste of the Football League and manager John Gregory is pleased with the progress they have made since joining the club at the beginning of February.
He told the club's official website: "Both Hiram and Sullay both now appreciate what it's all about. When they go back out next time they'll have a totally different picture about what it's all about," added the boss.
"It's not like academy football, but when you've done something for two years in the same manner and suddenly you have to change it is a bit of a shock. But they will be fine and will be a little bit more prepared next time."