Edit, My Contrail weighed 27oz sealed.
A single CF pole 2oz will cost about $20 depending.
I think the Tarptent Stratospire is interesting. 1 or a tight 2, big, 2 vestibules, 2 entries, double wall, full mesh interior, removable mesh interior tent so in the winter just use a bath tub GC and save some weight, 33oz +4oz for poles. More expensive though.
If they made a cuben fly this would be a great super light and expensive tent.
That said unfortunately none of these are long enough for me.