Budget? I would spend $1200 for a good thermal. $600 for a Gen 3 NV.
There isn't much in the way of thermal that is "good" for $1200 and I don't know where you are going to get a gen 3 NV optic for $600. You can get digital night vision for $600, but it needs an IR illuminator.
Chances are you will want a spotter in thermal. Thermal is infinitely better at spotting hot targets than night vision is because things can hide from NV with pelage colors or just by being in the shadows of a tree line. In other words, as a sight dealing with daylight colors, camo still works against the hunter. An IR illuniminator will help, but has its own problems with reflectivity. Imagine shining a bright light against a hedge row. You see the outside of the row, but not what is inside of it because what is inside is darker than the outside and so is virtually invisible with NV and an illuminator, the outside reflecting so much light from the illuminator.
NV can see through windows. So if you get a NV scope for scanning, despite it being inferior to spotting animals in the dark, you can use it to drive with and people find it easier to navigate with than thermal.
NV tends to be better for identifications than thermal, assuming the animal has come in close enough to be well seen.
Thermal is better for spotting animals. With NV and Thermal, everything is 2D but it is worse with thermal. In thermal, everything looks like silhouettes. Misidentifications are easy for the unskilled, calves, deer, rocks get called hogs. Coyotes get called deer and vice versa. If you have lower end thermal, you likely won't be able to tell the difference between a skunk, armadillo, and raccoon at 100 yards in the grass.
I only hunt with thermal and use NV for driving on some of my properties.
For your situation, I would suggest a Wraith Mini and get a good supplemental illuminator. Using the rest of the money to buy the best thermal spotter you can, ideally InfiRay USA, AGM, or maybe Pulsar. Your spotter probably won't help you much for identifying targets, but you will be able to spot them readily and identify them with your Wraith.
The reason I suggest the mini is that it is a bit lower magnification and has a better FOV than the full sized wraith, but will work fine at 200 and less.