I'm working on my first 'big stitch' quilt now as well. Yes, the years of training myself for all those nice tiny stitches are hard to break. My version of 'big stitch' isn't quite as large as yours. I'm also using perle cotton vs hand quilting thread. I'm liking the look for this particular baby quilt. And it's going much more quickly than my normal hand quilting. I'm hoping to get this one done in another few evenings!
I don't think I'd like this style on most quilts but it is fun on this one. DH's comment was 'you can actually see the stitches on this one'.