Tonearm sugestion

I got 121a luxman.. it sound awesome with fidelity research fr24. if you need a mid compliance. it's often said it's as good as the Graham phantom. and it's easy to install with luxman. and very reasonably priced. I love it and it's my favourite setup now. the detail and separation. texture, musical. naturalness is phenomenal. 

 cart with tracking force around 1.5-1.75ish will do great. I run signet Mc and,  epc 205 cii on it. 

3009.  will sound pretty good with Stanton 681  or grace  f9 or shures v15. however... it's hard to get it to good shape.. and a very manual tonearm 

just some of my experiences hope they help

The Link is to a recent report on a Thread covering Japanese Vintage Turnables along with a few other types.
The recent report is produced by a individual who has extensive knowledge and experience of Cartridge > Arm >Turntable permutations from $70 000 down to a $1000+ I feel there might be information to be gathered from the reports made and those yet to come that might be very valuable to you inquiry.
It seems like to me your Turntable has a lot going for it.
A few careful choices made on supporting ancillaries and the permutation might show another raved about TT a clean set of heals.

In the mean time, a Service for the TT, especially investigating what can be dome with the Platter Spindle Bearing and Bearing Housing could prove to be a very valuable endevour.

If not already dealt with in the past, chooseing a method to support and isolate the Turnatable can offer very noticeable improvements that are well worth the investment of the time spent seeking the advice on how to achieve the set up.  
   
https://www.analog-forum.de/wbboard/index.php?thread/154649-japanische-vintage-totl-plattenspieler/&...

I'm sure that German forum has some interesting post but you need to know how to read German.

BillWojo

I would start by identifying which version of the SME 3009 S2 you have as they vary greatly in effective mass.

DeKay