Different builder, but we'll be facing the same problem.
We wanted decorative handles, but the only locks that seem designed with these in mind we found rather awkward.
We've specced a single deadbolt only, but specified that it would be installed on site after the long handles are fitted.
I then plan on adding a modern rim latch as well. Such as the Lockwood 001 touch.
Or using a mortice ballcatch lock.