Wraith night carry windranger (updated with NG+ build)

I wouldn't recommend getting boots for level 1, there's nothing you have to kite. Starting off with a Robe of Magi and a Mana potion will allow you to clear all the ranged creeps safely and finishing your Treads then getting a Magic Stick for the Ogre Magi will benefit you more as your auto attack is so low at this stage that you won't benefit from the lifesteal. A casual Cloak or a wand will help a lot on wave 4, each time a Slark pounces and a Slardar slams you get a charge. Most of that wave's damage is magical so its a great way to stay in the game. I definitely agree with a Maelstrom, its probably the best item for this mode for high attack speed ranged heroes.