Interconnect Length

Is it possible to mount your TV on the wall? That way, turntable would fit on the component stand.

Low capacitance cables should be okay! 
https://www.bluejeanscable.com/store/audio/index.htm

Don't put your turntable in a corner -- this is a bass node and will maximize interference with your table. Ideally as others have noted the cable to the phono stage should be as short as possible.

One option to consider is getting a small phono stage that you locate next to the table connected by a 1M cable - then run a longer cable from the phono stage to your amp. Of course your amp has a MM phono stage built in so you could go with a head amp and a low output moving coil and the run the longer cable to the Marantz. Even a step up can help -- I currently run 2M cables to my step up then another 2M to my phono stage and have no issues

@goheelz  yes ! - that's what I was thinking.  I don't know how to elevate the tv; I Know I do not want to mount on the wall.  
Maybe I can place it under a stack of hockey pucks right under the "feet"... All I need is 5inch of clearance.. I just have to look for a base, maybe build one.  The TV is 6 years old, so it is heavy by today's standards.

either move stuff around, or...

get a good separate pre-pre and use XLR balanced runs