Hi Floyd,
Before I made any decision about what scope to purchase I would ask myself what exactly I intended to shoot with it

You have a fine widefield scope with your 80mm William optics with it's excellent LOMO lense,If it were me I would not replace it with the 98mm.
I have also heard of the focuser issue with the NP101 though I have never used one so can't say much more about that.I have however seen some great images taken with the NP101,you may want to look at Bernhard Hubles websight http://astrophoton.com/. He has used an NP101 and ST2000xm with great success.Should give you an idea of what can be done with the combo.
If you are looking for more aperture how about something like a 8"f5 newt. A decent G11 could probably handle it pretty well.It would give you a good mix of focal length and aperture and with the ST2000 put you right at 1.5 arc seconds per pixel.This would be great for many,many objects.
Another option would be to sell the 80mm as well and go for a 5" apo,something like a TOA 130 or TMB130 or.. insert your favorite here.These would also be a nice match for the ST2000.
Just my take on it,
Jason