I ordered the top end 13" MBA on Friday with 2-3 day shipping (an extra $13). It shipped last night with a scheduled delivery of this Wednesdaym two days away.

But it sounds like you want to look at the X1 Carbon as I don't see the need or benefit of you converting to Mac at this point, given your information.

Lenovo is always a slow ordering shipping process. It's never quick. Whenever I buy a Lenovo, I buy it off of eBay after carefully examining a seller's feedback and reputation.