3. We like that short rests require use of a healing kit and are limited. The long rests need to be fixed. At 1st level, healing a single HD worth of hp is plausible, but what about at 10th level - healing all hp seems too good. Perhaps you heal a random amount equal to your total HD, without needing the healing kit?
I'm going to continue to use it as is but if it remains as is I'll probably make some changes for my game. Such as healing any hit dice you have remaining only. So if you used them all during the day, then you don't heal that night.