It depends on your method of clearing the honeysuckle. If using foliar herbicides, you should wait. If your cutting and carefully spraying the stumps, you should be fine to plant witch hazel now (depending on the term 'carefully spraying'). If you're not using herbicides at all, you can plant witch hazel now and prepare to continue to battle honeysuckle into the future. Prepare for the continuous battle whether using herbicides or not.