Bit confused about an upcoming and long awaited trip.

Flying AA London to Los Angeles and then transfering to an AE flight to Las Vegas. I initially thought it was all in T4 at LAX, but now that I'm looking at it more deeply, I see on the AA airport info page for LAX that AE is a separate or remote terminal. Ok so far, but what's thrown me now is that is says next to T4 for flights numbered 3200-3339. My flight is 3107. Does this mean that flights 3200-3339 leave from T4 and the rest leave from the remote stand? Or is there another place in the airport that my flight will leave from?

Also, is there a transfer desk within the secured area, or will I have to take my bags out and check them in at the standard check in desks? I'm a bit worried as I only have 1hr 50 mins to clear customs, get bags and re check in again. It's a legal connection! An AAgent booked it all for me!