You have approximately 30 million in caps space this year to sign 3 big name players, the long term cap space is available for 20 million in 2013, 2014, and 10 million available both in 2015 and 2016.
You also have 7 draft picks, one in each round. You have adiquate space to cover these before free agent spending.
You can make 1 trade of draft picks, both sides of the draft pick trade must be equal on the draft chart.
You must pick players in the round where they are currently projected using this chart for picks 1-121 with two exceptions.
you may draft one round above on a single pick, but the next pick you must draft one round below, you may only do this once.
picks after 121 are free for alls
You must have reasons for every pick and free agent, to avoid going completely fantasy. These are approximately the paramiters the hawks are looking at for free agents, though I believe the actual hawks may have more cap space.