Greedy

I am going to buy the URD fuel upgrade package and was wondering about getting it tuned properly. I talked to URD and was told that if I purchase the Wideband O2 reader and OBD2 I can use my laptop to tune it using thier guide and alot of trial and error. Has anybody with this setup gotten thier engine tuned correctly without having alot of experience doing it or would you recommend I buy the kit without the readers and just bring it to a dyno shop?? Any reccomondations are appreciated...