Kip,
Here are my suggestions.
The crack/check will not be a problem, you can fill with CA glue and go it it is just cosmetic as long as it stays with in the bow.
The knots do not look that bad, are they violated? Hard to tell from the pics.
Knot 1 will be no cosequence that close to the (non-bending) tip and it looks like it maybe gone completely after layout.
Knot 2, can be trouble looks like it will be right on the limb edge. You can leave the limb wider there, I typically will follow the grain around a knot like this on the edge.
Knot 3, where in the limb does it lie? midlimb? That area could be left stiff to compensate for it.
Looks very doable IMHO.
Sean