How much of the Saddam death toll is the folks we left twist in the wind
after they thought we would support them in thier uprising?

Quite a bit.

Further, how many Iraqi deaths were due to fallout from the brutal embargo?

Oh, oh. Not so fast. Saddam managed to live in a state of unfettered opulence
throughout the embargo. Remember when one of his sons loaded a 40' trailer with
$US and lit out for Iran as the invasion closed in on Baghdad? Even if the
average
denomination was a $20, a trailer-full has got to be tens of millions. That
money could have purchased a 20 pound bag of rice for every family in Iraq,
every month, for one hell of a long time. But, it didn't.

Saddam was a *******. Any ruler who will live in luxury out of the national
purse (rather than personal wealth) while kids are commonly dying from
starvation is a *******. No serious person will lament that he has been
removed- the legitimately debatable point is whether the end justified the
means.

Whether the embargo was right, or not, is less important than the established
fact Hussein did far less than he could or should have done to ease the
suffering of his people. A significant portion of the embargo deaths *are* his
fault.