I would have bought the extention/compression tapping head.
You need the USB plate. Otherwise you'll be climbing under the machine to upload and download programs. I didn't even put the computer in the stand. I have it sitting on a table next to my machine.
Don't forget to get the Jog Pendant. That makes it a lot easier to move the machine around.
I bought 2 machine arms with my machine, still not sure if I did good there.
Get 2 extra sets of belleville washers for your PDB. I had a problem last week when 2 cracked and one exploded. I was down for 3 days while I waited for replacements. Tormach replaced them under warrantee, but still, I lost 3 days production. Now I have extras. Now that I have extras, I'll probably never have another problem.
I replaced the valve on the coolant line. The valve that came with the line was just too hard to adjust, so I replaced it with a ball valve
By pendant, are you referring to the computer or the monitor? If you're talking about the computer, I bought mine from Tormach. I thought it's configured to run with the machine, so why not. I checked out a computer with the company where I have my computers built, and that were within about $50.00 and I am computer illiterate, so I didn't want to take the chance.
I am a former CNC shop owner and I had a lot of tools, so I skipped the TTS tooling package and bought only the holders I thought I would need. I bought 4 each 1/4, 5/16, 3/8 and 1/2 inch set screw holders and 6 each ER16 and ER20 collet holders. I'll post pictures later today of my tool setting block and my edge finder.
Other than that, I really like my machine.