I've cleared over 100 times with solo and duo tanks and find solo tanking strat way harder. The dps checks are a joke anyway so unless you are confident in all mechanics of the fight go with two tanks.

1. Standard strat on my server is to have pld OT stack with 1 pets to soak fireball damage. Run into conflag if it is up.
2. Yes, unless it's about to die then stay in soak.
3/4. Grab little snakes as OT. After 5th DB hit Tempered Will and grab the other two. You can drag them to the center for lb but I suggest tanking them where they spawn. Use big cooldowns. You'll be taking a lot of damage once they start to die.
5. Maintain yourself as second on aggro by timing a provoke on twin. Just stun dread, wait for stun to drop off before stunning again. If you are MT just watch for death sentence and twisters.
6. Don't ever leave the neurolink. You take reduced damage standing inside. You must stay there to eat all the hatches no matter what. Your healers will heal you through liquid hell. Stoneskin yourself to help them out.
7. 490
8. Not recommended for a tank who doesn't know the fight.

Lastly /focustarget Twintania.