Agreed,Invertibility is crucial to a SNS. If you want it to be successful that is...It also looks very fragile. I believe you have the weight to change the polycarb extenders to aluminium.
You got my vote for RA2 Wizard. Always and forever.
Honestly, It would probably rape itself first.
I'm not really sure on the realism, but it's damn good. All the LW's, and some MW's fail against this baby.