You have lots of options, for sure. I tend to agree with Warnerwh in that your best bet may be to get a used Rotel power amp like an RB-990, RB-1070, or RB-1080 for $400 to $600 and spend the rest on a better CDP. Original Rega Planets go for around $350. Add those two pieces to your system and I think that you would be very pleased.
Good luck!
Good luck!