replace HT receiver with newer H/T 4K receiver

 Setting up a H/T room after moving in to new house and want to  replace Denon 5308CI  receiver  to newer receiver or seperates with 4K capabilities.   Have  65" LG QLED,    Martin Logan Edge in-wall  L,C,R speakers and M/L ceiling speakers, with  2 older SuperCube II subs. Room is roughly  20' x 30'. Budget is $4,000 or so. This room is strictly H/T. Have  separate equipment for music. Suggestions greatly appeciated.