You dont NEED those things. I swear I should make a video showing just how damn easy it is. You need to realize we are level 99 now, Abyssea content is 80~90. It does not take much to gear up to be able to duo these NMs. Prime example, get some bayld from Adoulin areas and go buy the summoner sachet from the bayld NPC. Use that sachet and you can pretty much duo a large amount of NMs in abyssea. One summoner can use an elemental spirit to try and proc even. Or you could get bayld gear and go BLU or any assortment of DD and use that to get abyssea gear. Hell, you could use perle or teal and duo low tier NMs DD + WHM with some atma (do atma as pet jobs or be ready for a challenge, which many new players are too lazy for.) I'm telling you it can 100% be done duo, people are just so damn lazy and unable to break out of that mentality that they need help from everyone and they start begging.

If you would like proof of it I can prove it, I can wear the crappiest gear available and still beat those NMs.