Hi

I can just mention a few details that seem relevant to some options
mentioned. First if there is anything tall close to the hob I'd want
to cover the side of it in sheet stainless for fire safety and for
cleaning. Chipboard corners dont survive repeated wetting (nor pan
fires). Secondly an oven in a corner is a perfectly good position,
position it at 45 degrees. Thirdly some ovens have fan cooled doors,
so a hob over the oven can be a non issue with one of these. Even with
an ordinary oven I've not found it any big deal myself.

Regards, NT