What is your main system? It would be really helpful to see where you are coming from. There is a place under your UserID to place photos and ID the components.
What are your objectives? What is your personality like. Do you really appreciate outstanding sound and just can’t leave it alone. How often will this other system be used? Would you like it carefully crafted… sounds like not. Are you willing to put lots of time into carefully crafting the sound? What do you want it to sound like?
Lots of folks want to make their second system a statement. I really like my second system (office): Totem speakers, PrimaLuna integrated amp, Schiit DAC… punchy, fun system… I put it together very carefully… but for much less than my main or headphone system.
On one end of the spectrum you can sell all your stuff and get a Linn DSM, a single box… does everything… or as much as you want.
It is seldom a kinda random collection of stuff is going to sound great for the investment.