While I cannot find a reference to 'Close' as a keyword I could implement it or simply state it does not have disadvantage in melee.
Cestus I need to see what I was thinking, it may have been part of my 'we need more finesse weapons' agenda but Defensive makes sense as it is protecting your hands when they catch or deflect an attack.
I do need to revisit the whole thing with the 5.5 weapon masteries taken into account but 4/5 is still enough to make my day!