Upgrade from my Planar 2

I want to plan my next move and am considering the options. Current setup: Rega Planar 2, Ortofon Blue and Vincent phono pre. I picked up the turntable used and had a new cartridge installed and the table gone over by a local shop. It sounds great and in many ways makes me wonder at what level the sound would be noticably better. Right now I have a $500 miracle so I guess the next step is much harder. I figure that a 1 shot upgrade on table, cart and pre is my next move. I have 4k to spend so I was thinking about a VPI classic for the table but dont know what to do about the cart or pre. There are lots of options and its gotten rather confusing. I want to hear better bass and smoother highs.

The rest of the system: B&W 802D, Cary SLP03 Pre, Cary Cinema 7B amp. I listen to Rock, Blues and some classical.