Richard, there's nothing wrong with the occasional stirring. Keeps us all thinking!
You'll be fine buying those materials that are currently legal, as long as it's from reputable vendors.
As far as ethics, you're correct, I'm sure most folks here have a line that we won't cross. I'll use pretty much anything that's legal, but as the others have mentioned, there are products I stay away from, such as Temple Dog, because of what I've read. My issue is that I'm not sure what to believe. Frankly, I don't have a need for it anyway.
I do not have issues with killing animals, and I've spent plenty of time in my life hunting & trapping. IMO, a good argument could be for the use of natural furs & hairs, because it can be a sustainable resource. Natural products also readily decompose. There's plenty of us meat eaters still around too. Not everyone has gone vegan.
It could also be argued that synthetics, which are primarily derived from oil products, could actually be a serious problem. I'm sure you've seen the news & the devastation caused by the off shore BP oil rig spill a few years ago. Synthetics do not readily decompose, and may last for more years than we'll be alive. That to me could possibly be a problem.
Opinions of course will always vary. I still use a good combination of both natural & synthetic materials.
I'm glad you used that lead wire. Would have been a shame to add it to some landfill.
BTW, welcome to this wonderful site & to fly tying! I hope you'll post some flies as you progress.