It depends on what are your intentions. For example: if you intend to run H4 headlight bulb then upgrading to headlight relays is a good thing but not needed if you are converting to HID. Are you wanting the Brown Wire Modification &/or upgrading to a MOSFET VRR?
At a minimum, upgrading the three fuses to weather proof ATO fuse holders relocated so they can be reached without removing parts is needed, IMO.