Well I think I have determined the best solution for me.
1) Using the stock mirrors with standoffs and/or the extenders did not help much. A little better perhaps, but still not good enough.
2) Use of the Emgo (cheap mirrors I took off a KZ1000) mirrors are much better, due to the shape I guess.
3) Use of the Emgos with the extenders helped the vision, but looked funky and did not improve it that much from just using the stock mounts.
4) Best option was using the Emgos with two standoffs on the left mirror to raise it to just about the height of the right mirror and rearward view is much better and doesn't look hideous.