In your price range, an extra $100 can buy you a lot more cartridge, but only a little more preamp. So don't sweat the preamp. (You can always upgrade it later.) In your shoes, I'd spend $100 on a preamp, and get the best table w/cartridge I could afford.
BTW, $400 for a used NAD 533? You can buy the same table new (the Goldring 1.2) for $300. Neither comes with a $200 cartridge. It's a $70 Goldring Elektra. It's pretty good, but there's always something better out there.
BTW, $400 for a used NAD 533? You can buy the same table new (the Goldring 1.2) for $300. Neither comes with a $200 cartridge. It's a $70 Goldring Elektra. It's pretty good, but there's always something better out there.