I have a BL Unity and just purchased a CD of block designs as this is something I want to try also. My personal opinion, based on your description of what you want to do and your skill level; if I were you I would "quilt with embroidery" each block and assemble the quilt with a QAYG technique. I think this path is very doable and will give you the results you are hoping to achieve. Just my opinion-looking forward to pictures of your finished quilt!