Theres the old proverb, keesje. When having dug himself into a hole, a wise man stops digging.
IMO the must be 12 crew 150k lbs 4 hauler MPA supporters dug themselves a hole, and it isn't a concept hole
So your concept is going to carry about 1500kg of AAR equipment (pods, pylons, pipework, extra high flow rate pumps, valves, vent lines) on a permanent basis? Plus there's the drag penalty of the pods and pylons....
What do you consider to be a 'large' fuel capacity? Your sketch shows a few fuselage tanks - what about the wing tanks?
No wing pods, center line. The wing tanks would carry most of the fuel.