tonearm + cartridge for custom lenco 75


Hey Analog lovers...
need your advise for nice tonearm and cartridge .
I bought a Lenco 75 (PTP4) + heavy plinth ,
which design to have 2 arms 9" and 12".

as understand ,good 12" long tonearms usually better then 9" arms in same price range .
especially for the Lenco 75.

so need your advise for a nice 12" tonearm and nice MC cartridge .
unless you think there's some nice 9" who could do the work.
my budget is 1200$ max for them both.
lower is better , would prefer to spend 800$ if the difference is not meaningful

12" options:

SAEC 308L
JELCO 750L (many says it good tonearm but it isn't true hi end arm).

9" :
Fidelity research 24
Saec 308N
SAEC 317

cartridge :
Denon 103R, AT 33 or OC9

Speakers:
Jbl L300
Amplifier:
SET 845 monoblocks
Pone stage: customize based on Tamura TKS 83 transformess
avico
Avico, Also, I have a VPI 12.5 and a Denon Dl S1 on my Lenco rebuild. The Denon can be purchased from Comet Supply for a little under $600. I used to have find numerous inadequacies of my various components. However, with this cartridge, I don't long for another upgrade. I have owned it for 3 years and listen an hours or so per day.

I have had great experiences with unipivot arms (Hadcock 242, Mayware Formula IV, and the VPI). The DL-S1 worked exceptionally well with each arm. The Hadcock and the Mayware can be found at very reasonable prices, used.
Have you tried posting this question on lenco heaven? I have an l 75 with a jmw 10.5i arm and am very happy.
Here is a Hadcock on Ebay in England. http://www.ebay.com/itm/TONEARM-HADCOCK-MADE-IN-ENGLAND-RARE-/300880592616?pt=UK_AudioTVElectronics_HomeAudioHiFi_Turntables&hash=item460de17ee8
Try a unipivot Clearaudio arm, if you can. I think the price is within your range (or starts within the range).
They are simple, well made and sound OK on the Lenco.
Otherwise try a used SME 3012 (or 3009).
Finally, I think Pro-ject sells arms separately. If so, consider at the carbon 12" model.
Mate the arm to the cartridge. The Lenco will do the rest. Just make sure that your chosen tonearm can be mounted on your chosen Lenco.