I would go single mode — it’s cheaper, the optics are about the same price, and it’s more future proof. Get a nice OFN/OFNR/OFNP cable and you don’t need to wo

I would go single mode — it’s cheaper, the optics are about the same price, and it’s more future proof. Get a nice OFN/OFNR/OFNP cable and you don’t need to worry about grounding. And you can legally the same cable indoors too.