Phil,
Stay away from SCT's until they sought out focal reducers and flatteners for these huge chips...if you had a smaller chip I would say go for it.
But if you want to head in this direction and have it sitting sided by side with your NP101....... 8" is the max aperture to fit.
How about something like Berts TAL200K
http://www.telescopes.ru/product.html?cat=1&prod=3
Or the vixen VC200L
http://www.optcorp.com/product.aspx?...-624-1087-6667
These scopes would suit your large chip more so then a Meade or Celestron SCT.
Enjoy your shopping.