> Guess, I'm back to CAT6 :-)

If you learned what you need for 10GbT you can learn what you need for 10GbLR. Which is:

LC connector, PC or UPC, duplex, OS1 or OS2, and SFP+ modules saying "LR".

Any of the following is wrong: SC, FC, LSH, E2000, ST, APC, simplex, OM[1-5], "SR" or "ER" SFPs.

And that's short enough.