It sounds like you looking to put up something that will not be perfect but effective does not have to “look pretty” and not cost a lot of money so as to get you through the next 8 months? You didn’t say if there is anything to “hang” some lights fixtures on. Be it trees, perfectly safe for this sort of short term thing, poles, building etc.
Assuming there is an power outlet or 2 within a reasonably short distance of the ring to plug into it would be pretty simple to “MacGyver” something that should work well enough using the stuff in the links below. Or something of the like. Basically you are just making bright “shop” lights that plug in. Have done this for outdoor party lights. If there is not anything high enough to attach them to a 12-16’ 2X6 will be plenty to support them. Just make sure to dig the hole 30+" deep and tamp tight. Or set a 4X4 and then attach the 2X6 with screws or nails screws are better. You want the lights up high enough so as to shine down and not at you. Which will be annoying when riding into them.
Put all of the below together then screw the light fixture box to the pole/board, run the wire down the pole, and secure it to the pole with duct tape, zip plastic ties or nail on wire holders and set the pole in your hole and tamp tight. And plug in. You may have to make adjustments to the light position so you may want to have your helper hold it in the hole, turn it on and then turn/twist the pole until the light shines where you want it then tamp securely. This is all perfectly safe, will do the job for not much money or effort and look OK.
If you are lucky your local Home Depot or Lowes may have a retired electrician that help you with everything you need. Ours has a great guy. But some can be full of themselves.
These light are pretty bright but the bulbs can be a bit problematic sometimes.
Or could use the standard incandescent outdoor flood light bulb and fixture but would not be as bright.
This box fit’s the above I believe. Depending on the fixture, some are round some are square, rectangle. Fit the box to what ever you fixture you are buying. These are outdoor rated boxes. You will also need to get the cover that the light fixture screws into.
These screw into the box, some boxes have a 3/8 hole, some 3/4 size to the box you will be using. The wire/extension cord goes through these into the box and you screw the clamp down to hold the wire from pulling out.
The longer the “run” meaning the distance from the fixture to the outlet the bigger the wire should be so as not to get a voltage drop due to resistance build up on long run wire runs. You will cut the female end off, strip back the outer cover to expose the wires inside. There will/should be a black, white and green covered wires. Strip their cover off to expose the wire about ¾ of inch. The light fixture wires and the extension cord wires should be of the same color. So you twist black to black, white to white, green to green and twist on the wire nuts. If one of the wires “sets” has a red a wire instead of a black just twist the red to the black. Sometimes the light fixture will just have a bare copper ground wire if so connect it to the greed ground on the extension cord.
These are used to connect the wires from the light fixture to the wires from the extension cord. Twist the wires together then screw the wire nut on them. The a couple of wraps of electrical tape around the wire and nut.
Or you can just get a couple of these and secure to a pole, board, building, tree, etc and plug an outdoor extension cord in to them.
To get someone to do this will be a few hundred $$ depending on who it is. Any decent handy person can do this and far cheaper then an electrician . It’s about as basic as it gets.