I know that we don't have to give up equal value for a free agent in a "Sign and Trade" deal, but how much cap space is taken up?...

I don't believe Lebron will push for a sign and trade, simply because I don't think he wants to even sign for 6 years.  He's a business man, like so many have said, and if he's smart, he gives himself as many paydays as possible.  Which means shorter contracts.  He'll be 26 in Dec.  If he signs a 6 year deal, that means he won't get another payday until he's in his prime.  If he signs a 4 year deal, he entering his prime and can get another on the way out, at least.(Assuming he stays relatively healthy)  

We get a competent coach in here, and I'm at the point where I really don't care as long as the guy is reputable.  Sign Lebron to a max deal for 4 years, and give a player option for the last year.  That's what? About 17 mil off our space right?

So this is where my question comes in. Say we then make a sign and trade for Bosh with Deng.  Bosh will make about 16.5 if we sign and trade for him.  Sending Deng is about 11 going there way.  So r we then tapped out as far as salary cap space? 

If so, I would really want to trade down and grab 2 late 1st or a late 1st and early 2nd.