My only real advice is, don't try and be too greedy on the draw weight or length (it ain't goona be 60# @ 30"
) and keep it as wide as possible.
A bow with huge knots is always going to be carrying a bit of extra weight so don't expect too much performance.
You can't leave too much extra stiffness around the knots else the rest of the bow gets overstressed, it's all very touchy feely, your fingers are prob' the best tool for feeling the thickness.
I feel the danger area is often not the knot itself, but the transition between where you leave a bit extra and the rest of the limb, so it's easy to go thin at that point, a bit like doing a fade.
Lookin' good so far.
Good luck.
Del