I'm with you all the way to "I could get a lighter tarp and hammock but I could also get a lighter tent." That's really my question. What lighter comparable hammock system could you get that is as light as an ultralight tent appropriate for shoulder season in Maine?
I want to be clear that I'm not basing my decision solely on weight, but that is the metric I'm looking at here in this post. I know a lot of folks will say getting a better night sleep in a hammock is worth the added weight, and I know a lot of folks will say that the added space of a tent when stormed in for a day makes a tent even more appealing.
I really appreciate everyone chiming in. It is helping!
With regards to getting a better night's sleep...
That is not a given. It took me at least 5 nights/set-ups to get it right, and some of those nights were terrible. I once woke up with a headache that lasted most of the day and I've had numb heals on more than one occasion. When it's good, it's really good though.