Have you seen the Janome Continental M7, it has a very large throat space which is perfect for freemotion quilting. It also has a built in double transport foot called the AcuFeed, which is also great for quilting. It has a lot of 9 mm decorative stitches and is also great for piecing with the hp foot for a perfect scant 1/4”
if you want to stick with Viking I can completely understand. The Brilliance 75q has the most beautiful decorative and appliqué stitches. Even has so called omnimotion stitch which are very very big.
Both machines have a hover function which make them great for doing Applique.
please google these machines, because I think one of these could be perfect for you.
Good luck and have fun choosing!
Annette