Advice on Budget System for newbie

I have decided to finally upgrade my Nakamchi receiver/CD player and need some advice. I have a pair of Paradigm Monitor 5v2 I bought new a few years ago, and would like to keep them (can't afford to replace yet). I need a SS integrated, CDP and cables (no need for phono for 5-6 yrs). The room is 14x25 ft, and I listen to jazz and rock. I would like to keep it around $800 total. How much do you divide the budget betw. amp/CDP/cable? I have looked thru Audiogon archives and will at least audition NAD (320 bee vs 352) and cambridge new. I will also consider used musical fidelity, creek, arcam or other brands, but it's more difficult to audition used units and it may push me over budget. Any suggestions?