How lightweight are you talking?
Your height makes it tough to get a tripod tall enough to stand behind, especially since you went with the straight spotter. If it was angled you could get by with a shorter tripod.
Only ones that come to mind is the Slik 734 or 733, but they're both right about at 3 lbs without a head. Depends on your definition of lightweight.
Slik 633 or 634, right at 2 lbs.I do most of my glassing sitting. I can deal with bending down a bit to look.
I'd like to be sub 2lbs on legs