Be sure you have copies of your credit reports. Otherwise there's not much you can (or IMHO should) do before discharge.
You want the credit reports to deal with behavior post discharge, I had some creditors take closed accounts and recast them as IIB which makes them negative. Because I could prove how they reported before filing I was able to get them to report correctly, without proof I don't know what success I would have had.
BK7 Filed 8/11/2009 Discharged 11/23/2009. Purchased new home 4/11/2012 Starting Score:11/16/2009EQ56611/16/2009TU538 Interim Score: 12/27/2012EQ68309/17/2012EX (lender)6701/01/2013TU701 Current Score: 11/06/2013EQ70811/06/2013EX 70211/16/2013 70211/06/2013TU729 Goal Score: EQ740EX740 TU740 Take the FICO Fitness Challenge