k5 will fit fine on that trailer . 18feet = flat deck. 2 feet dove tail = last 2 feet is slanted to help with loading and ramp angles.
you will find most fendered trailers are to tight for are trucks with more than 10" wide rims or 35" tires to squeze threw fenders.
just make sure you get the correct trailer weight range so when fully loaded your trailer and load arnt over the gvw of the trailer.
my state i dont have to stop at scales as i am not all stickered up bissness rig . nor tow truck class. personal use only. kind of like race car guys.
look in to state rules as to what axles need brakes and such. each state is diffrent and each trailer maker does diffrent things to save a few bucks.
i like my wood deck. works good for me. if it was steel lots of the stuff i haul would slide all over more and if oil on deck it slides like crazy.
i have a 10k equipment trailer for my needs. torsion axles . each wheel is independent movement. and deck is lower to ground. brakes on both axles. i added a 6k winch to frt to help load dead things.
my only problem is i didnt buy a 4ft longer trailer as my ramps and back deck edge are to close to bumper on cars and long bed trucks.
if you dont have a brake controler yet just save the money and get a prodejy thay are the boom.
