Take some measurements.......
From center line/center point directly over your rear axle to the corner of cab, to the center of cab and to one point in between those two.
Then measure from center of king pin to corner of 5vr
Got enough room??
IF not get a slider of your choice.
Have you checked your available payload?
That 5vr pin weight will be close to 3000# or more
Tow rating may be listed as 'capable' but in reality trucks run out of GVWR, rear axle weight rating, rear tire max load rating, payload rating long before reaching tow rating.
Towing is so much more enjoyable when within the actual limits of truck vs marketing numbers.