I always look for high ceiling coaches the first year, because you may not get coaches as good again. The only coach I would keep from the Bears coaching staff is their STC, he's about as good as you can get. As far as coordinators, hold out for Jim Caldwell and Pepper Johnson. The Colts almost always release Caldwell and the Patriots always release Johnson.
A good GM is critical. If you can, pick up Gil Darnell the first year. If not , the Bears GM has high ceilings in Contract and Trade Negotiation which is critical. Tim Cobble is the best OLC I've seen the first year. DBC-Dan White has performance 5, but Chipper Duncan is always a option. Mike Katcavage is a great LBC coach. I always end up with Tim Spangler as DLC. Tom Rathman is a very good RBC, if you can't get him try to get Eric Bienemy. I can never get a good QBC the first year, I always settle for Paul Hackett. If Tom Clements is available, pay whatever cost he asks.WRC, you're really lucky if the Colts release their WRC, it rarely happens but he' really good.Brent McDaniel has Performance 4 but Mike Johnson has better developmental skills.
Last but not least is the trainer- you can usually get a 99 rated trainer the 1st season. Robert Wyman and Arron Lee are the best, but Jeff Messner is almost as good. Jeremy Phillips and Ian Baker are also good trainers.