Thanks for the replies. At this point, I'm have it rigged as MG's #2 above, but have only put the right strut on the inside, as the left side is OK. It's asymmetrical, but I'm thinking I want as much spread between the struts as possible to improve lateral stability. I'll take it for a loaded test ride tomorrow (I hope).
I'm kinda scared to start bending, otherwise I would do that.
I like to stand up to climb, so preventing rack sway is crucial.
Crossing my fingers...
anna