I've built numerous wheelsets using DT440 rims. They have proved easy to build and tension and so far, have been extremely durable. They stay true and round with minimum attention.
I'm a flyweight, so YMMV, but my experience with DT is all good. They have an offset rear and seem to hit all your boxes.
DT440 being replaced by 411/511, may be hard to find 440...
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Chisholm's Custom Wheels Qui Si Parla Campagnolo