US Airways Dividend Miles - Experience with US #754 (PHL-CDG)?

Anyone have experience with this flight and connecting to a TGV train in Terminal 2? It looks like this flight usually arrives at Terminal 1, Gate Y04. Is that gate at the terminal or is there a bus to the terminal? More importantly, is it possible to make a train that departs TGV Terminal 2 at 8:58 a.m. (US #754 is scheduled to arrive Terminal 1 at 7:55 a.m.)? My backup plan is to catch a train out of Paris Montparnasse at 11:15 a.m. Any suggestions or comments are appreciated. Thanks in advance.

IMHO, it's too tight to make. You'll spend about 10-14 minutes on the airtrain between T1 and T2-TGV station. Count immigration & luggage delivery on top of that, and the risk of missing your train is just too big.
(I've made the connection in the other direction: TGV supposed to arrive at 11:36, train doors only opened at 11:42, airtrain brought us to T1 at around 11:56, some minutes of searching the US checkin desks to be told the check-in for the 13:00 flight had closed. After we had told them we came from the train (and had to show our tickets), they allowed us to check in and told us to hurry up.)
Relax, and take the RER to the city, get a croissant & coffee at a boulangerie, and then take the train...

IMHO, it's too tight to make. You'll spend about 10-14 minutes on the airtrain between T1 and T2-TGV station. Count immigration & luggage delivery on top of that, and the risk of missing your train is just too big.
(I've made the connection in the other direction: TGV supposed to arrive at 11:36, train doors only opened at 11:42, airtrain brought us to T1 at around 11:56, some minutes of searching the US checkin desks to be told the check-in for the 13:00 flight had closed. After we had told them we came from the train (and had to show our tickets), they allowed us to check in and told us to hurry up.)
Relax, and take the RER to the city, get a croissant & coffee at a boulangerie, and then take the train...

Thanks for the advice. I've also heard it might be easier to transfer from CDG to a train at Massy station rather than Montparnasse station. Thoughts?

Also, we will be flying in Envoy; are there any benefits once on the ground at CDG? Lounge access? Faster lines? Thanks!