It will be interesting to see how you make out. I recently finished re-making my system, which now falls somewhat in your ballpark. Speakers, amp and preamp cost $2900 used.
Soliloquy 6.3i speakers
Coda Model 11 amplifier
VAC Auricle preamp w/ phono
Which would leave you ~ $3100 for your Sources and cables. I'm very happy with the sound I'm hearing. I put this together as a "budget" system, after selling off most of my more expensive gear, yet this rig is still very musically satisfying to me.
Soliloquy 6.3i speakers
Coda Model 11 amplifier
VAC Auricle preamp w/ phono
Which would leave you ~ $3100 for your Sources and cables. I'm very happy with the sound I'm hearing. I put this together as a "budget" system, after selling off most of my more expensive gear, yet this rig is still very musically satisfying to me.