Setup question


A brief setup question if someone doesn’t mind helping me out. In my family room, I currently have a 5.1 setup with a HK AV receiver, 2 JBL towers and JBL everything else (which will be upgraded to PSB sooner than later). I wanted to add vinyl to my family room setup but my receiver does not have phono in. I bought a nice Rotel turntable and NAD amp that can be used as a pre, power or integrated amp.

My question is, what is the best utilization of this equipment? Should I go turntable > NAD (pre) >HK? Or should I go turntable>NAD (integrated) >speakers and use the speakers for both setups with a switch?

Thank you in advance for your help.
128x128eli_tackla
Assuming you are keeping your system 5.1 for audio and video:

You can use the NAD as a phonostage only by connecting it to a line level input on the AVR from the record out connection on the NAD. 

Otherwise I would consider purchasing a budget outboard phonostage. What TT/cartridge do you have?
The Ortofon red has an output of 5.5mV which would work well with the phonostage within the NAD, as well as most of the budget MM phonostages now on the market. 

Please do not take offense, but i believe the use of an AVR as amplification for a vinyl system represents a weak link, primarily due to the preamplifier stage. Therefore, if space is not a constraint I believe you might find using the NAD as a phonostage satisfactory. 
@mesch No offense taken..that was pretty much the root of my question. On a technical basis, switching the towers between the NAD and the HK, would you use banana plugs and plug them into the system being used at the time, or use a switch? Some people were saying to avoid a switch.