Bought a system without auditioning, thoughts?

It'll largely boil down to how well you like the Klipsch, and how they play with your room.  The components are all good stuff, and the MP500 with the SL1210 should be excellent together.  

Congratulations! Get to work and put it together. Allow some break-in time and enjoy. You will know in due time where to make necessary tweaks or changes.

One thing you didn’t mention, do you have a dedicated listening room and what is the potential for some room treatments? 

How about setting it up and listen. You are the judge of liking it or not. If somebody comments that this set up sucks, highly unlikely, would you sell it right away without trying it out?🙄

Closing day on house got pushed back, that’s why it is not put together.  I have kids can any room by dedicated? (I think I need 7 years until they have no interest in me). The only items I can probably return are the klipsch, I wanted something with a broader horizontal dispersion and could be placed closer to a wall but still have bass without a woofer.  In the future I want to add DAC and power conditioner and could prob upgrade turntable (technic is mostly for nostalgia and I had it before everything else)

All good components, and they will most likely sound very good together. After break-in time the only question is will your system suit your needs and likes. I believe at least half of the music-listening community, if not a larger percentage, cannot audition equipment they purchase in a store let alone in their home. I'm glad to read that you decided to "bust a move" instead of thinking about what to do and being stuck in neutral. Eventually, you will sell one or more of your components and purchase something else, I call it the evolution of audiophila.