I've been thinking about attaching a tripod head to a large piece of plywood.
It would certainly help to get closer to the ground, and save a few dollars also.
I learned about LF photography on a Sinar P2, now I have an Omega monorail.
I've never used a Crown Graphic, but I'm assuming it's doesn't allow for much movement.
You might want to consider that possibility, and save the money for film.
And monorail cameras seem to be extremely affordable these days.