Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
3M. They're not cheap. 300mm doesn't appear to be a standard length, though it seems they might make custom cables. Availability could be an issue--DigiKey being sold out of 5.0 cables until September.
I still have an ABIT IP35 Pro floating around somewhere. Ignoring the fact that ABIT went under in the middle of the product lifecycle (thus making CPU upgrades difficult if not impossible), it worked well enough.