Help/Info Needed with recording vocals in ableton 8

[Specimen-Yarp]

Well being on the forum im clearly a dubstep producer, and recently i have been making some beats for my cousin to rap on.
The problem that i encounter when i go to record him is
1)If im in asio mode for my audio , The sound comes in way to much and you can hear the sound of the air when there is silence.
2)if im in standard audio mode like direct there is a delay from the time he says something into the mic, to when you can hear it in ableton on an audio channel.

It is a usb phantom powered condensor mic and what i do is i route 1 audio channel with the finished beat for him to listen to while he raps with headphones on, and a audio channel underneath for recording the vocals.... I for the life of me cannot fix the issue of the audio delay, and like i said, when i go into asio the delay goes away but then the sound of air becomes over welming and completely shits on the quality of the recording . .
Is anyone else fimiliar with this issue ? or even have a way to resolve it ?
He has plenty of talent and i would just like him to be getting the quality of production he deserves.

[Specimen-Yarp]

update: Got a tip from the DOA grid, next time im over at my cousins i will try messing with the mic gain in asio mode so there is no delay, that may get rid of the air noise, other tips would help alot tho, that way i got some things to try out incase one does not solve the problem

[blinx]

not saying its impossible to do what you want to do but i really think its not going to just work with the usb mic alone, it would be Alot easier to do this with a mic > soundcard combo. I know my tascam has analogue zero-latency hardware monitoring so i would turn a mix knob and set the level of his mic of the backtrack and not monitor the audio track in ableton just record the takes.