I do lube the hell out of it every 2 or 3 rides though.
Less is more. Lubing the chain more, can infact promote wear sooner.
Lube the chain less for more life.
How tho ?. Its quite simple. At some point, when turning right the front wheel will make a straight line between your front wheel and your chain. At this point everything that your riding across, except for the tarmac itself is flung at the chain.
Lube it so its thick, oily and nicely sticky, and it grabs all of that sand, pebbles and rocks. You will find many of them in the countershaft sprocket cover, because this is the tightest radius on the chain, if it flings off anywhere, thats the place.
This sand and debris will wear down sprockets and chains, naturally.
From a metalurgical standpoint, a 530 is just chunky and cheap to manufacture. The larger rollers require cheaper tooling to do the job, as links arent hand pressed. Thats why they are OEM Honda on every new Blade.
The difference between a 520 and 530 is only the width of the roller, oh and end plate thickness but that isnt a issue as you dont see good 530's or 520's snapping in common situations. The 520 still has the same roller diameter, so its strength isnt a issue, and with teh slightly wider 530, its contact point loading is debateable if it will promote less wear.
Simply put, a 520 conversion, with clean chains and sprockets (ie proper maintinace) will result in no more chain servicing and wear than its big brother the 530. Buy a good chain like a ERV3, and some renthal or Afam sprockets, and your set. A good 520 will give you the strength, relaibility, and long term wear of a 530, with much less effort = free hp.
For the street using chain wax is a good choice, for the track it cannot handle the sheer on and off loading and heat, stay with a non fling lubricant.