Not too many guys here are going to recommend running a 6 month long cycle. It's a pretty health centric board, at least as much as one can be focused on their health while using AAS. With that said, I've done worse, so I'm definitely not going to shake my finger at someone for doing the same thing that I've done. Just make sure to take plent of time off after, and do an extended PCT.
With the orals, I wouldn't do the 4 on, 2 off, 4 on. Just do it for 8 straight, or double your dose for 4 weeks. A lot of guys are concerned about orals, and rightly so. But, I feel like Tbol is mild enough and well studied enough that 8 weeks straight on it is relatively safe compared to most other orals. Others might disagree, and I can understand that, too. I wouldn't disagree with anyone erring on the side of caution.