If they can't satisfy you that they will deliver in the next ~2 months, if you really want an AR I would scrape together whatever you can and go buy one (if you can still find one).
I never really felt the need for an AR though I wanted one "some day". I sat out the last however many scares. This time, I went to the AR-selling Wal-Mart Monday and watched them sell the last two ARs they had (brands I didn't want). Made it to my LGS 10min before they opened and got in line...after the weekend rush they had 7 ARs left in stock, fortunately one was a RRA I was happy with and I bought it. They were essentially picked clean of what had been a huge stock of semi-autos by the time I walked out.