I think that you should pick your speakers first and foremost. The speaker has a very big impact on the voice of your system . I am not going to tell you which manufacturer to go with because the sound you prefer is extremely subjective. Which means going around and auditioning what you can at shows or with fellow philes etc.
But mark my words speakers first or at least the house sound of the manufacturer that impresses you, now with your budget. Get he entry level used etc. to get something that has the signature sound you want.
Fit the rest of your gear around that. It may take some time. Ask for specific advice regarding issues that seem to be in the way of the sound.