it increase the wyvern's hp and acc mostly making it good for meripo and solo but that is about it, didn't help "end game".
Leaping boots worth it, unless you're mithra/taru then you can get away with RSE, other wise they have use for quite some time, volan good 38~54 for jumps, AF is superior on jumps however, sam sub becomes comparable in terms of damage at 60 to war, I wouldn't use it before 60 though.
Weapons, I'd recommend this:
Platoon > Lance > Obelisk Lance > AF > Mythril Lance > Holy Lance > Darksteel[can skip] > Grand Knight Lance > Skystrider/Gae Bolg > Cletine[not needed but good] > Thalo.
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