05-03-09: DgaylinIf you both like the Arros, why don't you use the $1K budget for a more powerful amp instead? I suspect you need current delivery more than power anyway.
Acceptable height is of course the height of the Arros because she likes those. Or a bit higher (maybe 36-37" max).
Since it's a bedroom system, do you need to have small unobtrusive electronics as well? In that case, look into a PS Audio Trio C100 integrated amp or a NuForce integrated. There are a couple of the earlier model NuForces in the A-gon classifieds well within your budget. The NuForce is small and sexy enough your wife might consider it worth the extra money. I know my wife will extend the budget with sufficient visual appeal.
The better ICE-powered amps are not only compact, they provide the low level detail you'd need in a bedroom system and the fast current delivery you need for the Arros.