Towing a fiver with a 9' flatbed

i am on my second fifth wheel and my third flatbed. my first used the existing ball and i installed a gooseneck adapter. it worked great but my next is a mobile suite and i was leary of using the adapter with it due to the weight so i purchased a conventional hitch. it is a little nose high but i cannot lower the hitch or raise the pinbox any further. it was level until i added the more ryde pinbox. i really like the flatbed. easy acess to everything,durable,easy to touch up the appearance.downside is you have to be careful to strap everything down. never had clearance problems with bed but i could not open front compartment while hooked up for you weight, i would probably go with gooseneck adapter. just my opinion