Trailer Suggestions

I'm on a spending spree apparently, so I need some advice on a trailer. I purchased a new Superior Smoker and it weighs in around 600 pounds. I'm looking for a trailer to haul it and my stuff around to competitions. I would like to have room to work in the trailer during inclement weather, but I don't want to get into a full kitchen set-up. Well I would like to, but I am on a budget.

Here's what I'm thinking so far.
6x12 enclosed trailer
7' interior height is important as I'm 6'3 and my team mate is 6'5
Barn doors since I have trailer ramps and I want to keep the footprint within 20' at comps

Plan is to have a table or two, maybe a mobile cart with tools, some shelving / cabinets for storage.

Also, what's the main difference between a torflex or leaf spring axle?

I'm torn between a single and tandem axle. Leaning towards the tandem as that will allow my ever growing pile of competition stuff to keep growing without worrying about the weight, but it adds about $1k from what I've found. Also, what's the main difference between a torflex or leaf spring axle?

Brands - Anyone familiar with Haulin'? They are made in IN so I could save some cash by picking up at the factory.

Other things I should consider? I know I'll need to do some updating and have budgeted for flooring, basic electric down the road, etc. I don't plan on having 3 bay sinks or heated water due to the size. Cleanup stations will be outside, rain or shine.

I'm watching the used market, but finding one we can stand up in seems to be a major roadblock.

Any opinions would be greatly appreciated.

I have a Nissan Titan 4x4 which is rated for 9,000 pounds or so.

EDIT - Here's a quote I have for the Haulin' 6x12, single axle
Torflex 3,500# axle
15" radial tires
7' interior height
2 12v lights, 1 switch
1 piece roof
3/4" floor on 24" centers
3/8" wall on 16" centers
Side door, barn doors, jack stands
.03 aluminum exterior
24" stoneguard

Pick up for $2,685 (4 hour drive)

Thanks for the info everyone. I'm thinking I will be more comfortable with a tandem axle set-up. I added up the weight of my stuff and it's close to 1500 pounds. That doesn't include any additional flooring, cabinets, other stuff that will inevitably be added, etc. I don't want to worry about overloading, especially with the hefty smoker.

I've come across a few models of interest, but nothing stands out yet on the used market. I hate to buy new, so I just need to be patient and hope something shows up.

Dave98 said:

I would ensure that the tie downs will be stout enough to keep 600 pounds in check.

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Ok, so how does one add tie downs after the fact? Is it just bolt them through the plywood floor? Is it more complicated than that? I assume if I use some heavy duty ones that will work.

I will add that the smoker is not on wheels. It has 2 large wheels on it, but you have to tilt it to bring them into play. I assume that will make it a bit more secure in transport.

getyourrubonbbq said:

If you're only going to tie it down while your moving install recessed E channel in the trailer walls. One up around the top of the cooker and one about 3/4ths down. Two rachet straps and your good.

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So James, would you push the smoker to one side then? I'm picturing it pulled tight against the wall in the situation you describe.

I had planned to position the smoker right over the axle(s), also centered left to right. Can you get away with loading more on the side with the tandem axle?

Sorry for the dumb questions - Just want to do this once and not mess up.