Difficult to say really.
The problem is that as this is only a preliminary design, many things are still subjective to change if this was real-life, and so flight characteristics will alter as a result.
what is this and can I buy 2 please?
The Navy tail-sitter VTOL program was a failure. The XFY and XFV contributed nothing to the development of modern VTOL aircraft.
I may only be a pilot and not an aerodynamicist, but I can tell you that aircraft in its current form would be nigh-on unflyable, as none of the wings/stabilisers have any dihedral. As such, this aircraft would probably Dutch roll like, well, whatever Dutch thing gave this flight mode it's name.
Also, there are much more efficient (yet similarly packaged) engines than RR Tays these days.
^good luck trying to land it.
and speaking of ducted fans:
The Royal Air Force Red Arrows Aerobatic Team. Taken during a display in Jersey, Channel Islands, UK on 10 September, 2009.
Canon EOS 5D Mark II, 70-200mm 2.8 IS Lens, 1.4 Extender, Polariser.