Very similar to how I mid Lux. I use the Mejai's, which is suggested in this guide, instead of Lich Bane.

Very good

To be honest i have tried Lux without clarity and it does not work for me even late game she has some crazy mana issues and i do have morello's on there and seals of clarity but i still find her to have way too many mana issues to not take clarity. This is my opinion i meant you could get like an Archangels and that might help but i personally like the clarity. Thank you for your feedback though ill have to try my build with Archangel's and see if the clarity is not needed if so i will update the guide. As for being squishy i find (in my experience playing Lux) that late game she does such crazy damage that she can fend off champs like gp and trynd i mean if they get to me they can really mess me up i agree but like Icecreamy said if your are good with Lux you will know how to survive with her with that much health.

I disagree with Hourglass, I always have I don't see the benefit of it on someone like Lux. Quite simply you shouldn't be in a situation where you have 5 people hitting you at once, that's just bad play it is an item that shouldn't be needed.

Actually 1700 hp is plenty enough for a good Lux...

1700 to squichy 2 hits in late game by for example gp and trynd and your dead, never clarity useless with lux

You may want to look at jhoijhoi's guide on how to make a guide. Very useful.