tarptent hogback would also be an option.

speaking from experience, (I use a very similar ex-NOLS pyramid tent for this role) the reason I'd reccomend the shangri-la or a similar 4-5 person pyramid tent is that at 5 pounds they aren't a lot heavier than the hogback or fly creek option, and you can stand up in them - something I find a bit more valuable when jamming 4 people into a tent rather than just two. Once you have to step around or get overtop of a person, this just makes it a bit easier to deal with.