Cartridge selection is way too much a matter of personal taste to make without hearing for ones self. For instance, I love London's, but would never recommend them to anyone else. Arms is a different matter, but you'll probably want to specify a maximum price you can pay. I would look into the Terminator arm from TransFi, a straight-tracker.
A great turntable technician in the LA/OC area is Brian Berdan at Audio Elements in Pasadena, one of the best in the U.S.! He also has a good selection of arms and cartridges with which he has had a great deal of experience.