You absolutely want the station as the centre point, so you would need to move that down.
A sub-optimally located station is not an acceptable compromise to keep a 1960s-70s housing estate standalone. Mentmore probably has more merit than Cheddington. It's half and half 1960s social housing-a-like (don't know if it actually was social housing) and 1970s Barratt estate with a few cottages dotted around - basically it's West Bletchley in a field, of very little architectural, social or historical merit on its own.