Hey I bought 1 set of the ultimate equipment the one thats 36 gold and bought another one thats worth 50. When i go too see nanoe it says "1/2" equipment owned.
In my opinion, I don't think you need nanao because there are better supporters as you keep lvling.
For the equipment, I think you need to buy a second full set.
yeah dont bother with nanao she is good for PVE early on but as soon as you get Rukia + Kisuke she us useless and even before that you can use ppl like sado/momo on PVE teams and as you are f2p the little gold you start with can be very valuable later on specifically buying soph rangiku for a day to get yama his bond.but i believe that it may be to late for that now.
you indeed need a complete set:
50 for each part, 6 parts for 1 set
300 Gold in total
this set can be used up to level 70, afteward you'll just sell it for small amount of silver
... don't bother except if your a fan of Nanao