there is many types of support to be used for counter top for long lasting work... as ... 1) brick wall which takes 2" , 4" or 6" thickness space which is not good for below space as we will waste space for storage under counter... this is used where heavy material is used on top of counter for cutting any food items... 2) marble support... which will take 35mm thk space double support... 3) furniture base if the kitchen working person is using the sink properly for washing purpose and the gaps between the sink and counter top has to be sealed properly for leakage free to avoid any damages for below storage, as i will not prefer this in other area... this can be used only in foreign countries...

Madam Your options are ok.... From dimensions point, few things to take care: Your Existing platform depth, you need minimum 21 inches depth for Modular one... New Hood/hob will need 60*60 cm space.... From there you can finalize your sink position/size.... Sink size usually are from 380mm to 600mm, check your window size first!! Since you are removing the old door, plan wall shelves parellel to base cabinets (below existing countertop) Wire basket's are usually from 300 mm to 600 mm size, , based on your lengths it can be further discussed... On the other side there is an RCC shelves which you may have to remove for proper look......

Hello, SB you can place the same quality granite over the cut out portion, using L brackets underneath the new granite, which will hold the new granite piece in its place, then use black Silicon to cover to gaps. Regards, Urban Kitchens

the sink should be at 33" from the floor. your countertop height will depend on if you're using a top mounted or insert sink