KOS, I went with the Jesel timing belt drive and distributor based on Best Machine's recommendation. Timing belt due to cam and valvetrain harmonics, and the distributor to have a bigger cap to lessen likelihood of crossfiring. This engine will be WOT for up to two plus minutes at a time.
The Meziere water pump I chose because of flow rating and to free up some power. After going down this path, I spoke with Meziere and they said a mechanical pump would have been better...so time will tell. I did get a custom Saldana radiator for this project, so hopefully it will work.