The rings on my 4m are about 25cm long, my bee came with one long line attached to the brake bridle which had only one knot at the very end. The kite was crap and didn't handle at all. I spend several flying sessions playing with the brake line lengths by shortening this long line until the kite behaved.
I will measure the distance from where the bridle comes together to the start of the flying line to give you a rough guide if that will help, but it will probably come down to a little time spent playing with settings for your bee to fly right. It only takes a 1cm difference in brake line length to make a difference
Good Luck