A few things to consider when buying such a vehicle....If you'll notice, most of the four(and more?) wheelers pictured are built with a "reach"; that is the bar that connects the front and rear axles, or, they are made with very small 'bike' type' wheels that will pass under the "box", or body, of the vehicle. Some are 'cutunder', which will allow the wheel to pass under the box, but only as far as the 'reach'; some are NOT cutunder, and have wheels too large to pass under the box(you'll notice that those have the wheels set out wider away from the box.). It is important to understand that a reach, as well as the lack of a cutunder, LIMIT the turn radius of a vehicle...sometimes severely...so if you try a 'tight' turn, whether intentionally or not, the vehicle could turn over--because the front axle can only 'rotate' so far in either direction. It is not uncommon to see everyday-type buggies made this way, but it IS something to watch out for, depending on what you wish to do with your vehicle. What might be OK for walking down a parade route may NOT be safely suitable for much else!
Of all of the vehicles pictured, for the use you mentioned(trail driving in the woods, right?), the only one I'd recommend considering, just based on what I can see in the pics, would be the two seat Mini 'utility cutunder', with the motorcycle wheels. It will seat just as many, and would be sturdier, safer, and more maneuverable than the 'lil Red Devil' (which is a version of a surrey, and has NO cutunder(and front wheels too large to pass under the 'box', best I can tell from the pics),meaning it would not have really good maneuverability;it has a higher center of gravity, meaning more easily tipped over -- and flimsier wheels. I read the descriptions, and know those aren't 'bike' wheels; they are similar to the wheels found on Frontiers, and are surely heavier-duty and stronger than actual bike wheels, but I personally would not want a 4 wheeler to be pulled by multiples, and presumably, to carry as many as four full sized adults, on those narrow pneumatic tires/wheels. Even though small in diameter, the motorcycle wheels should be much sturdier, more resistant to puncture, and roll more easily over soft or uneven ground. If you want a 'top', I imagine you could get one built for that vehicle; the attachments should be pretty simple. It's cute AND should be sturdy and servicable for the use you mention, I believe.
No matter what you get, I wouldn't really recommend lamps ---they 'look' cute, but are almost NEVER really 'useful'...and add considerably to the price, even the reproduction, electric ones, which I think those probably are.
Ask how heavy the vehicles are; remember that the total weight of vehicle and all possible occupants need to be taken into account, so as not to overface the pair, especially a miniature pair.
I own three pair vehicles; have driven a pair for quite a few years now. The only vehicle I'd consider among those pictured on the page referenced is the two seat 'utility cutunder'.
Enjoy driving your pair/team!
Margo