I'm new to MYOG, but have sewn casually for a long time. IMO, sewing machines are one area where light=cheap=stay away. I don't know anything about the machine you are considering, but a good machine will have all metal gearing, and will be pretty heavy. Older ones (and new high-end) will also have metal housings, and weigh even more. Pfaff, Husqvarna Viking and Bernina are all excellent-- expensive new, but sometimes you can find an old one at a thrift store for next to nothing.
I have an old Necchi-National I bought for $10, that I use when I don't want to abuse my wife's machine. The only features I really care about are adjustable straight and zig-zag stitches and ability to easily backstitch (usually by pressing a button or lever--sometimes very old machines don't have this). Free arm is also nice, and a buttonhole stitch saves time. If the machine has accessories available that make flat felled seems and parallel rows of stitching easier, I can see how that would be helpful for MYOG, but I'm just guessing.
I'm planning on doing a quilt myself soon--these forums have been great , especially Tim Marshall's comments and gear pics.
Thanks for starting the new thread.