Kitchen drain location

Hey everybody, I have 15 cyclone 3800. I plan on rearranging my kitchen to better suit my needs. I want to relocate my kitchen sink drain 2 feet towards the front and 1’ towards the left looking front. I just want to know If I have enough room under the flooring to move a drain. Or do I have to modify the Gray tank? Has anybody done this before? TIA picture for reference of plans.