Not much is available now in the tent market due to companies having to scale back. This and product changes over time make most of the old threads on this subject not too helpful. For example, Black Diamond had a tent, the Skylight, which might be ideal, but it appears to be out of production, as do a number of others.
Even though you will accept a single wall, you also want bug protection. That may mean a double wall, and it may rule out most of the mids (pyramids). But it would also enable more comfortable trips to more well watered areas that can be quite beautiful.
Maybe a Mutha-Hubba NX, a small 3P tent from MSR would be plenty spacious for you all, It is free standing, a proven design and under 5 lbs. It would also keep your small dog in the tent if tempted to gett spooked and run off, especially in thunderstorms or from fear of other animals that are about. Note that this tent it is a conventional inner first pitch, so cannot be pitched dry in the midst of a downpour.
But it is not superlight like some of the tents you mention. Faced with a 1P and 2-dog situation, I modified a solo tent with two vestibules to turn one of them into part of the inner tent. OK for a solo, but for 2P, the second vestibule is needed for the comfort of the second person. And it doesn’t sound like a major mod is what you want anyway.
Good luck. It should be interesting to see what others may suggest.
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