Hello guys!! Needing some advice on Rake, fork length and wheel size.

I`ve seen a nice custom bike i like the look of, its got stock length down tubes, 38deg rake, its front end is a stock length springer,with a 21" wheel.

Im looking at starting my own project in my Garage{2 kids under 3 and a full time wife living with me} so im prepared to spend a few years in there!!.
im liking the look of the 38 deg rake,but id like to use a 2under springer with a 23" front wheel {18"rear},does anyone see any problems with this?? is rake to much at 38?? will there be any ground clearance issues, frame sitting front end low/high etc?? any info would be great,pictures of project with similar sizes would be awsome,
Thanks for your time,

El Gordo.