Lose 5% bodyfat, HOW LONG??

I weigh 230 lbs roughly
Im about 15% BF

How long do you guys think it will take to reach 10% BF
If I dont lose muscle that will put me at round 218 lbs

Too many variables there. It depends on 1) your genetics, 2) your diet, 3) your workout routine.

My personal experience is that it is very difficult to lower body fat and takes a balanced long term approach. Then you really have to stick to it without cheating.

Good luck.