here you go:
The table in How to Brew states: (percentages are based on weight of total fermentables)
3-10% = For a subtle honey flavor in most light ales and lagers.
11-30% = For a distinct honey flavor note to develope. Stronger hop flavors, caramelized or roasted malts, spices, or other ingredients should be considered when formulating the recipe, to balance the strong honey flavors at these levels.
and 30+% = well you shouldnt be taking that route anyways.
I wouldnt just go tby "add a lb or 2" use the ratios given to addjust the flavor you want.
Also from all of the searching around I have done, it seems like adding honey after primary fermentation is complete helps to maintain a lot more of the honey flavor.