Well I assumed you are not panning to hook this up to your Pinto bumper and going for it
, so "professional" tow service was also assumed, you mentioned flat bed, that does not sound right, again unless I am missing something here. I looked up park models and they are ALL equipped with axles and tires for over the road transport, why would you remove them? Maybe the park you are moving to or from can recommend a company that sets the trailer up and will move or know someone that moves them, typically a local towing service. Do not make mountains out of mole hills, 35 feet is not very long, 12 feet is not very wide and 5 miles is not very far. Most towns will sell a daily 'wide load' permit for minimum dollars.
I have watched mobile homes (just large park models) getting installed and removed, it goes like this
1 Remove all skirting around bottom of trailer if so equipped.
2 Disconnect all services,gas, water power, sewage, cable etc.
3 Reinstall trailer tongue if it had been removed.
4 Install tires if they had been removed.
5 Remove all blocking supporting trailer
6 Move any sheds or decks that may interfere with move
7 Hang a wide load banner on back.
8 Move it and reverse procedure at new location.
Any parts (porch/decks /awnings) that were installed on the outside when trailer was first place may need to be removed for transport
Have a happy move.