That looks pretty good, with the miter gears being in the first stage I'm not to worried about the thrust loads. However that also means high speed so wear is a big concern.
If you can get your gears from martin sprocket instead of Boston gear, should be the same specs but the former are case hardened (may have been doing this already).
I would also make sure the gear on the cim won't move, it may be fine how you have it but just a possible concern.
Can't wait to see it running
