IMHO Decorative lacing is best left to decorative bikes. If you are going to hang this bike on a wall so that you and your friends can admire the artistic stylings of the rear wheel, go for it. If, on the other hand, as it sounds like, you want to ride this bike and therefor need to be concerned with reliability and service issues, build a more standard designed rear wheel with good quality hubs, spokes and rims. This is even more important for the rear vs the front since it is dished and will be endure torque that the front will not. YMMV