Daisy is hard to find. I've been to the park 40+ times in the past two years and never seen her (I've looked). But occasionally micechatters post pictures with her in trip reports, I think she hangs out in character dining more than in the park. I hope that helps.
If you are going while the Halloweentime festivities are still taking place I think you have a good chance of seeing Jafar, or at least I saw him out last year during that time... check at DCA at the Golden Screams theater. As was mentioned before the one and only time I have seen Daisy besides the parade is at Lilo and Stitch's Aloha Breakfast at PCH. I haven't seen Baloo in a long time and I have never seen King Louie at DLR.
Its interesting the coastal difference. When I was my honeymoon at WDW last year, I couldn't swing a bag of nickels without hitting all of those characters (except Jafar, never saw him). Baloo and King Louie were everywhere, and every time we got into a line for Donald, his handlers would take him away and bring back Daisy.
I am so jealous!!! My girls love Daisy and they prance around the house pretending to be her so I am doing everything to maximize their chances. Balloo, King Louie and Jafar are for me! Thank you all for the good ideas.