Quilt as you go?

I have been making crazy quilt blocks. I haven't sewn in the decorative stitches yet.

This will be my first quilt (I have only made totes with my first blocks). I came across this video (link below) and had a thought and wanted to run it past the seasoned quilters.

I thought of sewing in the decorative stitches as per usual, then using an invisible thread to quilt the block to the batting and backing. Then I attach the blocks using the decorative stitches and machine sew instead of hand sewing.

My blocks were made to be on point and I think I can pull it off.

What do you Cuties think? Am I missing anything?

And invisible thread is new to me is it strong enough for a childs quilt?

I have a picture of two of the blocks, one pink quilt for my eldest daughter and one purple quilt for my youngest daughter. The girls picked out the designs they liked and I picked out the fabrics from the scraps and fabric stash.

Any suggestions would be great. Thanks