I would add that if you have young children, a hinged halogen oven would be safer than one where you have a separate top.  The footprint is not much bigger than a large dinner plate.

Personally, I think you would be better having a dedicated steamer, I use mine every day - there are a wide price range of steamers, with either oval or round baskets.  It's also great for rice and fish.  My present steamer was around £15 and is still going strong after 4 years or more.  Kath