Heavy or lightweight flywheel?

Hello all from Germany. If you know me on FB, than you know that I am putting the original motor together for Lucille. 340, +0.40" with a Molnar 360 stroke crank, Molnar rods and Icon 360 +0,80" oversize pistons with Total seal rings. I will be running a mechanical roller Lunati camshaft, Trick-flow heads as well as the Proform 4 bolt mains. Of course the six-pack with hidden NOx.
The motor that is in the car now has a lightened Schieffer flywheel. It appears that they are no longer in business. I am looking for recommendations for a flywheel and clutch combination. Back in the "Front Street runner days" I needed a clutch ever 5.000 miles...
When all of the parts finally arrive, I will fly over to the States to put the engine together. Other than myself, there are only two other folks that I trust to put this engine together except for myself. One is my Pop (86 years old) and a guy at the MoParShop here in Germany. I do not build "Velcro" motors.
The motor is going back in a '68 Barracuda with 3.55 rear ratio and if you did not understand the question, a 4-speed. Not an OD box either.