The only one you absolutely need is +15% hit because 60 is overfilled with archer classes and the average ranger/sin walks around with more than 100 base evade.
You can get a bottom part (Gallus Trousers) for your sprite at the Grassland Altar in Kaslow Plains for 200g if you have 16k fame.
The other two you mentioned are important as well, but I'd like to add +7-9% ATK dmg to the list. It isn't used by a lot but I found it to be really helpful. It boosts up your attack really nicely, and works especially well when capping.