The Hub

I am repairing a damaged Stella parlor guitar. The original top was birch, plain sawn at 0.100 inches thick, ladder braced with multiple beefy braces and irreparably split, warped and generally separated from the sides. I want to keep the instrument ladder braced with a movable bridge and upgraded tailpiece, all firsts for me. I would be grateful for input on 2 issues.

1. The new top is Adirondack spruce that I’ve reduced to about 0.110 inches at the sides and 0.125 at the center/bridge area, to be radiused at 28’. Would anyone recommend thinning it further?

2. I’m replacing the top braces with good spruce material and was planning on mimicking the prior pattern (pic #2) except for more of a base side spread on the lower bout to open up the base a bit. Are pyramidal nonscalloped braces 1/2” by 3/4” adequate? Any other advice on pattern/dimensions/bridge support would be greatly appreciated!

I include pix of the tops and a plan for an old Stella. Thank you!