I would have expected a slew of answers to this thread, but in their absence, I'll weigh in.

You didn't say what the ring gap is, but it may not be as critical as you may think. As engine builders and hot rodders, we put a motor together with a certain gap so that the end gaps will not butt together as the rings gets hot and expand. As the motor is operated in the first days of its life, the very rough peaks and valleys of the bore are worn down to a smoother plane and ring end gap expands out to whatever it will be for most of the remainder of the motor's service life. So, whatever the ring gap is now, it will be again as soon as the wear-in process is completed with a honed bore and new rings.

What would I do? I'd re-install the rings on their respective pistons, re-install the pistons in their respective bores, install the cam and lifters I suggested in the PM along with the Victor Reinz head gaskets and drive it until it breaks or needs a rebuild.