[Jac Mac]

With regard to the maintainance etc I dont see why a full season + should be a problem. Given our experience with the TVR engine which has now completed its 4th season in the SFOS series, a total of 12 meetings plus testing. Leakdown @ end of each season, inspect filters, remove rockers after oildown stop & check lobe lift. Valvelash & inspect valve springs each meeting along with ign timing . Thats about it.
I have had similar results from ex Nascar 355 motors in T/A type cars . One of these was Dyno tested at 800+ Hp before being shipped out, gave excellent service for 2 seasons before a link bar on the roller lifters failed.
If you are on top of any cooling/lubrication problems it makes life easier, but dont let your guard down in the valvetrain area, keep looking & checking.

Jac Mac