Congrats on your new trailer, looked seriously at that model but ended up getting a 2106DS, mainly because we wanted full access to the kitchen and bath with the slide closed.
It does seem to me that the 2106FBS might be a lot for the Ascent to handle. I weighed ours with a full load of water, supplies for a week long trip, and all the modifications and other misc stuff that we need, and it weighed in at 4865 lbs with a tongue weight of 635 lbs.
All combined with the two of us and large dog + other camping supplies and tools in bed of truck we are approaching max loaded weight for our 1/2 ton pickup. Will be interested to hear your experiences. Stay safe and happy camping
2021 Micro Minnie 2106 DS
Chevrolet Silverado RST Z71 Duramax 3.0l