justanother - It's a lovely idea! It would look loads better like that. Sadly, this being Ikea, they work in 20cm increments - so you can only go 60 to 40 and there isn't space for two 40s.
I was kind of tempted to have 4 units across by the hob to make it more even, but I have no pantry space elsewhere and I think I'm going to need the tall larder unit to store all my cans, pasta, couscous, flour millions of packs of crisps, chocolate, superfood wheatgrass powder for adding to smoothies etc.
Totally lying about the wheatgrass powder