I wouldn't bring in the traveler - I made that mistake once and it cost Zander 2 fractured ribs. If the traveler is in when the main gybes and catches the wind hard, there's a good chance that it will overpower and stall the rudders when it pops over making the boat round up and capsize. If you gain just a little too much angle with the main in you capsize quickly.

Your best bet is to leave everything out but with the main firm enough that it has some shape to it. Accelerate and have a step by step plan in your head. Let the crew (if you have one) start their way across the boat...they're going to need to get to the back of the boat quickly but leave you enough room to maneuver. Once the crew has started their move, make your turn briskly (but not so fast that you stall the rudders and put on "the brakes"). As the boat turns, help the boom start across (the crew might be able to do this too). I grab the mainsheet between the blocks and pull it to the center. As soon as the main starts across the boat, reverse your turn slightly and turn a little further back downwind...you're making an "S" turn...go just high enough for the main to catch the wind on it's backside and then quickly and firmly turn back down...but not too far!