Personally I would prefer that RAAF AP-3C Orions be armed with AGM-65 Mavericks instead of the AGM-114 Hellfire/Hellfire II. While the Taliban do not seem to be equipped with (or at least it has not made the news where I am) with manpack SAMs, it is not outside the realm of possibility. With that in mind, I would just as soon not risk a highly valuable aircraft that could not really be replaced when alternate munitions would keep it safer. The RAAF also could potentially make use of Kiwi expertise in carrying out the fitout.
The reason I considered Hellfire, rather than any other missile are:
1. It is already in ADF inventory, whereas Maverick or some other missile type is not.
2. It is a small relatively cheap missile suitable for the types of targets (especially in it's K - blast fragmentation, rather than armour piercing warheads) being engaged in the WoT. Maverick seems a bit "heavy" for taking out a 4x4...
3. Being relatively small a fairly impressive warload of 4x missiles per pylon can be carried. Maverick or other larger missiles can generally only be carried 1 per pylon. (I've seen 3x Maverick carriage, but rarely, so it is obviously not favoured).
4. RAAF AP-3C's already have Harpoon Block II to deal with larger maritime and land based targets, whereas the RNZAF has no such capability.
The max range I have come across for the Hellfire II is ~8km, hence my preference for the AP-3Cs being equipped with Mavericks which have three times the range. I do not believe any glide kits are available, nor do I think they would be of use if there were any. The Hellfire is a laser-guided missile (GPS/datalink not currently available) with a few different lock-on options, before & after firing essentially. Given the missile's small size (~45kg, 1.6 m x 18 cm) the range of both the seeker and motor max out at ~8km, therefore having either GPS and/or glide kits would be less than useful. It is possible that somethink like a Hellfire III might be developed, since I believe that the JCM (Joint Common Missile) which was to replace the Hellfire has been cancelled. In which case there might be additional iterations of Hellfire where such features could become useful.
But the Hellfire's 8k range is achieved from slow flying and even hovering, helos at low altitude.
An AP-3C that is already doing 200kts or faster from a higher altitude is going to impart greater range on the Hellfire missile. As for 8k's being the max laser and seeker range, I'm not sure about that. Even Paveway II weapons are credited with 12k standoff ranges...
It is notable that the Brimstone missile (same missile body and rocket motor as Hellfire) is credited with a standoff range of 25k's. (Mostly because of altitude and increased launch speed I'd suggest).
The Hellfire is available in MMV radar guided variant and doesn't only rely on laser guidance...
The Maverick out of interest is only available in IR, TV and Laser guided modes itself. No matter which variant is chosen, great standoff range is not a feature of these seekers and again, RAAF has Harpoon Block II's for longer ranging shots...