Jock,
I went with option #3 and because I too was told that #2 would be a heat problem with my lowers on. I shook my head for a bit, but being a new bike and not wanting to give them any excuse if a problem arose I went with #3.
I was on the Kangamangus Trail and started hearing my I thought was my primary knocking, thinking that the bridge covers are the only new item just put on did I reach down with my gloved hand and pushed on each cover which were both loose.
This happens a lot with #3 and can make some unreal noises till you get them tight again.
It wont matter if you use heavy duty Loctite on them either, they'll loosen up.
Mainly where the problem lies is if the head bolt happens to be not in-line straight to the set screw and trying to lock into a angle of the head bolt, it has the tendency to back out. And I had them turned in to the point of snapping or stripping the set screw
Damn thing even popped off one ride and damn if I didnt just put my hand down to check it and it landed right in my glove!
So I got the #2 option now and when the heat comes up I'll be taking my lowers off anyways, But not that I can swallow that horsechit that the heat will be to much, The computer already tells me that at the drop of a hat!