Unless you like to cook a lot of fry-up's I think a fairly powerful extractor fan should still be effective even when set back a bit. If you really want to position it over the hob you could have a contractor build in a robust boxed in false wall onto which you could have a normal 60 or 50cm wide extractor hood mounted. It would have to be anchored well to support the weight, the electrician would need to allow more power cable and a longer flue but it shouldn't be all that expensive or difficult to do. You'd probably want to make the cupboard next to it an open one or check carefully that the door is still functional.

the paper cut out method suggested above is good advice. Consider all landscape, 2 rows of 3. Consider 3 landscape in a column with a portrait flanking on either side. Try to make sure that the subject matter is similar in all the frames -so all black and white photographs of people, or all leaf paintings etc. That gives an elegant and cohesive feel to the group and gives it a reason to be there. Hope that helps

I don't think you're far off but the pink camper is too close to the frames to its right. Try to keep spacing fairly consistent between frames. So either move the big black frame and the one below to the right a bit or get rid of the pink camper van and put a smaller one there. Also add a small one bottom left. Personally I like all black frames but that's just me

@HU-902064280 its the Safavieh Kate Shag Rug. We got it from Amazon but its available at a lot of retailers. https://www.amazon.co.uk/gp/product/B00PNR2QXE/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1