Option 1: has no bivy, so you might want to use a Spinn Twinn for more coverage and venting. You're probably going to get a lot of condensation in the Spinn Shelter and have no bivy to help keep things dry.
Option 2: Can't speak to the MSR stuff, but does the wing provide many pitiching options?
Option 3: with the bivy, you can move down to something lighter and smaller than a Spinn Twinn. Like a poncho/tarp to do double duty as rain gear. Also note that the Spinn Twinn has a catenary cut, so A-Frame is pretty much your only pitching option. I have a Spinn Twinn and it is a great piece of equipment. But it is not my go to shelter. Normally I use a MLD Soul Side Zip bivy with a MLD ProSil poncho/tarp. Other times I go without the bivy and take the much larger Spinn Twinn. I just got the Spinn Twinn a couple months ago, and have used it a lot.