Solid Hardwood, Engineered and Laminate Flooring - Questions about laminate in doublewide manufactured home

I have a great room 28 x 26, the main access door is on one of the 26' walls. My question is having to put the laminate over the "marriage" seam, and the natural movement of the two halves of the double wide (on site for over 10 years), other than putting the moisture barrier, padding and flooring, is there any other "tricks" I should know when dealing with such a large area and a manufactured home?? Please let me know. I was going to lay the flooring opposite of the marriage seam as to make a "T" across the seam, would this be right.

It must be flat across the marriage. Laminate requires a substrate flatness of 3/16 of an inch in a 10 feet radius.

The two halves are pretty much level, but if I understand what you said, the two halves cant be more than 3/16 difference? If they are withing those levels, is everything else right? If they are more than 3/16, is there anything I can do to "cheat" the unlevel and put the flooring down?

Just wondering if the two halves are not "perfect", is there any way to cheat it, or am I just out of luck??

Plane, or sand down the high hump. Fill the low spots with Cement compoud, like ARDEX Feather Finish, or shim as you go, with ridgid cardboard, or roofing felt.