Thanks for the reply Jim!
Yeah i was thinking I would probably have to stagger the elevations. I have 4x6 that i plan to bandsaw down to have an arch on the outside of the brace. 1.5" tenons sound good.
Can the mortises of the braces going in the opposite direction be stacked right on top of the others?
On another note I recently purchased a 2" bit and 1.5" bit from you.
the 1.5" bit works great but the 2" one doesn't seem to want to bore much deeper than a 1/5". Any advice?