You might check if you can find a Eureka Backcountry Outfitter tent. Unfortunately they don't make them anymore. It had an integrated fly, so all you had to do is assemble the two shock-corded aluminum poles, place them in opposite corners, and then clip the tent+fly to the poles starting with the center/peak. Then add hood poles above each door, and stake out the corners and side pulls and you're done.

You can easily put it up in the rain without getting anything wet, plus it has a separate fly and tent, so you get good ventilation.

I bought one of the 4-person models for each of my kids to use in Scouts. Very nice tents, but not very lightweight compared to many.

Here is a two-person:
http://www.campingsurvival.com/eubaou.html

I can't seem to find a 4-person.