Vintage DD turntables. Are we living dangerously?

Have a question for you experts, just remember I am learning about analog and some things I might get it wrong.
Just recently acquired a PD-444, the ability of mounting 2 tonearms and looked in good condition it made it hard to pass by, still waiting for it to be delivered. I've got an EPA-100 mk2 for it with an SH-100, as I understand it this is a Medium to High mass tonearm which would benefit from moderate to low compliance cartridges.
For alignment, what do you guys recommend? the tonearm original mounting template is at $120 on Ebay which is nice but a racket IMO. I've got the protractor that comes with the Hifi News record but seems to be Bearwalds whether this specific and most japanese arms are Stevenson.
Raul posted that some tonerarm alignments even the manufacturer got it wrong (was it Saec?)
So my question would be which type of alignment should I follow?
P2S is 250mm and Overhang 15mm
Any specific method to test the bearings?
Any cartridge recommended for it?
As a second tonearm for the PD-444 what should I look for? MA-505LS? FR-64s or 66s? apparently the SAEC's and Victors are not that good as the FR and MA per previous comments. Just trying to look for a versatile tonearm different than the EPA-100?Note I also have a 1200mk5 Technics with medium mass tonearm.
Thank you in advance for your answers, I'm excited with learning and rediscovering vinyl.
Raul, looking forward to your comments (bad or good) I won't complain, your experience is legendary
Chak, of course I'm interested on your comments tooLew and Nandric, I respect you immensely, you guys make a lot of sense.
All the best
Luis

Just recently acquired a PD-444, the ability of mounting 2 tonearms and looked in good condition it made it hard to pass by, still waiting for it to be delivered. I’ve got an EPA-100 mk2

Luis, unfortunately you can’t mount EPA-100 mkII on Luxman "armboard", it’s impossible, required hole for the tonearm base is too big (actually it’s huge). I have EPA-100 mkII too.

Any Technics tonearm with that huge base (like EPA-500) is not compatible with Luxman base.

But earlier EPA-100 (not mk2) is fine for Luxman.

As a second tonearm for the PD-444 what should I look for? MA-505LS? FR-64s or 66s? apparently the SAEC’s and Victors are not that good as the FR and MA per previous comments. Just trying to look for a versatile tonearm different than the EPA-100? Note I also have a 1200mk5 Technics with medium mass tonearm.
Thank you in advance for your answers, I’m excited with learning and rediscovering vinyl.

Actually Victor are perfect, but you need a NOS sample, not broken junk. I think Victor 7045 and 7082 are excellent tonearms for very reasonable price, but again, you need to find absolutely perfect sample.

Fidelity-Research are fine, I have 64fx with n60 and 64s with b60. But I’m using them only with low compliance cartridges.

Another arm is Lustre GST-801 which I have on my PD-444 for a long time, great tonearm for the money (with great features, this is a nice arm for many cartridges), much more reasonable priced than Fidelity-Research.

P.S. Welcome to the Luxman club!
For your PD-444 try SAEC SS-300 mat, Micro Seiki CU-180, or modern Sakura System's THE MAT. 

Thank you @chakster , for the tips. I'm excited rediscovering analog, my 1200mk5 which supposedly is not an audiophile class TT sounds great compared to my digital, I would say different. I can only imagine the possibilities with the PD-444 and two good tonearms and carts.

If you have access to a woodworker and machinist, it's not hard to expand a PD444 with a partial subplinth and third arm base out front.  I did that with a thick wenge wood subplinth and a brass pillar that accepts standard Micro Seiki brass cantilever armboards.  This frees you to add whatever arm you like.  If interested, feel free to PM me for pictures.   The dense wenge actually dampens the entire TT and improves the performance of all three arms.

@dgarretson Thank you so much, I will certainly PM you, a good friend of mine has a workshop where he makes furniture with wood and metal, I installed the CNC control computers for him, and Solidworks too, he can design anything and have the router to machine the wood piece, it will be just a matter of selecting the right wood or board, I am not a TT expert nor I have too much experience except with TT that are ready to play :) but wood expands and contracts more than particle board, it is also more dense which is good so I guess you guys will know which material is best. I guess granite would be too hard to prepare for this task.Wow, a PD-444 with 3 arms !!!!!