Hi all, I am new to GD forum. We are searching for 5W for a while and love Solitude 378MBS. 378MBS GVWR is 16800 lbs. We have a 2021 GMC 2500 Diesel. Base on the sticker, MAX FIFTH WHEEL HITCH is 18,500 LBS. MAX PAYLOAD is 3,563 LBS. Do you think it will be OK to tow 378MBS? By the way, we love to go to the mountains. Could you guys help with this? Thank you so much!