You can see here, I use boning tape, which is much better than just twill tape. I will use it if I have to, when wider boning won't fit the tape. If you've never used the tape, it has a pocket in the center, which the bone slides into and has a seam allowance for stitching it into place. Perfect for placing bones between seams. I often stitch it to the lining, so extra bones don't show on the outside. Otherwise, I insert bones along seams and I quite like the look of the top stitching down the seams. It needs to be accurate though! You can see both methods used here.
The eyelets are stronger when washers are used on the inside. My grommet setter does a nice job with this. I bought my setter from Farthingales and the eyelets with washers also. The black are the eyelets, the silver are the washers.
I'll keep you posted with progress, though I have 1812 corsets for Fort Wellington to do first. It all gets done in the end! Don't you find you juggle several things at once?