Yes the resawing is the hardest part. My bandsaw do not have capacity to cut the sleepers so I use my table saw by flipping the sleepers and doing 2 cuts. I wish I had a three phase heavy duty machine with a big blade to cut them. Here is a few more photos
All I can say Jarrah is TOUGH! But it is also one of my favourite woods. I like it even better because the ones I have used are reclaimed. I had similar problems with blades that gets destroyed by Jarrah wood. The only thing that seems to last at least a while is TCT. I had a look at your churh pews, nice job!