Tippit,
You'll never know until you try. It looks good at this point. I would arc weld a handle of some sort on the uglyest end, have all your moves planned out, and get er done. The hardest part, besides getting the nerve to start, is allowing time to come to proper heat and resisting the urge to hit the billet after it cools below the proper heat.
As a confidence builder, before you do anything, grind a little on the outside of the billet and see for yourself that it's now "one" piece of steel. I'm talking about the edges of the laminations. You'll probably see the strata, but there should be no gaps.
Also, another thing that can fool you. When the billet is at it's largest cross section, you have to allow a little extra soak time to get the middle of the billet up to the same heat as the outside. The flux may be dancing and looking good on the outside, but if there is a shadow in the center, wait till it changes and the whole things is the same color and at heat.
I have recently started stacking my billets into odd numbered layers. That way the exact center of the billet is solid and the welds are moved, albiet only a little, away from the dead center to increase my chances of a good weld. You may have to sketch a billet on paper to understand what I mean. I did.
Lin