New Quilting Machine

Okay, I did it.  I am quilting Cindy's quilt right now, I did Debbie's yesterday.  The repairman said I needed a new bobbin casing but she's working great right now so I'm taking advantage.  Meanwhile, I just ordered a new machine.  I figure the best time to sell mine is while she's working well, right?  This is what I bought.  It has a stitch regulator and needle up/down and I'm hoping I did the right thing!?
I ordered a Tin Lizzie Apprentice.  After much back and forth with the guy at the sewingmachinesplus site we think it will work on my frame.  The sensors have to go on the carriage next to the wheels and my techy hubby says it will work.