Yes!

: How did he get enough power to still be more powerful than the Istari after putting portions of is own power into the Ring.

Sauron was already of a higher order than all of the Istari, as Tolkien says in one of his letters. Actually it was Tolkien's notes on W.H Auden's review of The Return of the King, sometime in 1956.

It saya that, when talking about Sauron:

'...being in origin an immortal (angelic) spirit.*'

And the * leads to note which say:

'*Of the same kind as Gandalf and Saruman, but of a far higher order.'

You can't get plainer than that. Sauron was far more powerful than Gandalf and Saruman, therefore with the Ring he became fantastically powerful. In fact Tolkien says, in Morgoth's Ring (HOME Vol. 10), that Sauron, at the end of the Second Age, had more personal power than Melkor did at the end of the First Age! PAINFUL!

: Why did he not make ring-wraith's out of the dwarves also? 16 is better than 9.

He found, after having handed the Rings to the Dwarves, that they could not be dominated by him or the One Ring and the Dwarven Rings did not extend life (I think) when worn by Dwarves. This probably had something to do with the way the Dwarves were made by Aule. Aule made them so that not even Morgoth would be able to corrupt them, so If Morgoth couldn't, at the height of his power, then you can assure yourself that nothing Sauron could do could corrupt them.

: Did Sauron have power over the Balrog of Moria?

Mmmm! This a point of much debate. I would be inclined to think that Sauron could command or had power the Balrog. Not directly, but with bribes and cunning, rather than raw power. This is of course, during the Third Age when Sauron did not have the Ring. With the One Ring I believe that anyone in Middle Earth could stand up to Sauron, not even the Balrog. Also the Balrog, although a Maiar itself would remember itself as having been Sauron's inferior under Melkor.

In short without the Ring I believe that Sauron could defeat the Balrog if it came to it, but could not 'command' it as such, but that they would (and did) work to similar goals, that of the defeat of the West and the Elves. With the One Ring, Sauron would not have needed to kill the Balrog cause he could have commanded it to do whatever he wanted.

: The Ring is what woke the Balrog in Moria right?

Not that I know of. It was the Dwarves delving too deep that awakened the Balrog. And the payed for it!

: If so would he have took the Ring for his own? and if he took it for himself could he overthrow Sauron?

If the Balrog had gotten hold of the Ring then I do believe he would have taken it for his own, and yes, with it I do believe he could have overthrown Sauron. In The Council of Elrond it is said that if any of the wise (wise meaning in this case, powerful beings) overthrown Sauron with the Ring then they would set themselves up as a new Dark Lord. The Balrog and Gandalf the Grey were evenly matched, with Gandalf the Grey just having what was needed to win. If Gandalf, or Elrond, or Galadriel, etc, etc could have taken up the Ring and overthrown Sauron, I'm sure as hell the Balrog could too.

: How did Sauron come away with the Ring after the sinking of Numenor?

Can't remember and I've got to go to work now, so I don't have the time to look it up. But he just could. Probably something to do with the fact that he could only loose it if it was actually taken from him, rather then dropped or lost as it were.

Cheers

Padster