I assume you are looking at Miele 626x series oven. The Culinario H6267BP is a very good choice. There is a promo 600$ off at the moment till November 30th, see http://www.miele.com.au/domestic/cooking-baking-8-3219.htm. The flexiclip that comes with the oven is very handy and can be left in there in the self cleaning cycle. The perforated tray is also great for bread baking. H6267B is still a good choice, if you don't want to pay for pyro function. If you are set on Sirius brand, SL906 L850 is another option. Baffle filter works pretty good; I have one on my big whispair undermount unit. The perimeter extraction in SL907 may work fine. It will depend on your cooking. SL906 probably can extract air better, but it does not look as cool.

Perhaps, not strictly canopy style would work better. Qasair can do custom design, if there is not thing that would fit your need already on the market.

Hi HW. Yes, I agree the black rangehood would complement the range very well. However, an undermount is also good choice. Do both have equal extraction rates? I'm wondering what style do you plan for the kitchen and house, in general? It may be helpful to consider the kitchen as a whole to determine which you think suits your style and needs better. If you can provide us with some further info, we can help more.

You can get slim range hoods that generally fit into the wall cabinets ours were approx 40cm deep which housed the complete operation, our plumber ran a 6 or so inch flexable ducting into the roof cavity and out under the eaves. Most brands make these. A photo would be helpful. https://www.thegoodguys.com.au/omega-52cm-undermount-rangehood-oru50x?CAWELAID=620013790000422290&CAGPSPN=pla&CAAGID=21711678566&CATCI=pla-376401441757&gclid=CjwKCAjw0qLOBRBUEiwAMG5xMNN63iJr0n0Bnxf31-Gt0t5s0vERt_lOwOYkC6uzovf9TDWwawry9RoCgxQQAvD_BwE&gclsrc=aw.ds&dclid=CLOv9erawdYCFc0slgodE5oLHg Where we didn't have wall cabinets we had tall boxes of stainless look laminate built up to the ceiling which contained the extraction unit, which was approx 30-40cm's and extraction ducting cheers