I have to replace the chines on my boat ...my fault since when I took the UHMW off the bottom and replaced it with epoxy/graphite (huge mistake I really miss the UHMW) I made the mistake of running the cloth & poxy up ver the sides of the chine.It ended up with some spots where the seal at the top of the chine failed and moisture migrated down to the bottom edge and stayed there so lots of rot. Interesting that the chine rotted but not the plywood (fir). So I am just curious what other woods have been used ? I have thought about the various iron bark types and I also have some apitong but it is not dried.
What do you want to have when your done? A bullet proof Chine, or something that's pretty, expendable or easily replaced, Is cost and wood's availabilty an issue? What woods are available locally? The answer to these questions should point you in the direction of the solution to your problem.
If not, how about White Oak, Mahogany or Teak.
For sure I'd make sure before you add new chine logs the hull is repaired and sealed for the long haul.
For the outside what about white Ash. It has goos elasticity for taking impact and bends nicely. It does like water so you have to keep it coated. I have used it as an outside chine on my drift boat for anumber of years and like it. Used it as a bottom outside chine and top rail.