About the Babylock Jazz, I have heard that although the harp is 12 in. wide, it is not very high. I was interested in the fact that it's a mechanical machine and the 12 inches to the right of the needle is great. However harp height is important to me.
You might want to consider the Juki TL2010Q. I've had mine for 2 years. The harp is 9 in. wide x 6 in. high. It's a great, reliable machine.
Of course, we all want more harp space at a reasonable cost, that's why the Jazz is of interest. I'm looking forward to seeing more information.
Hopefully, by now, you may have resolved your problem. Keep us posted.