The factory housings don't cast far enough to be useful for driving at speed on roads. You won't notice any improvement for picking out wildlife, far enough away to make any difference.
You could try brighter bulbs but again this only helps for objects very nearby already, far too close to help stopping in time for deer - which I deal with regularly, there are a pack that feed in my backyard every other night.
I don't know if anyone has tried 100W in the stock housing, but it is pretty big jump. The factory bulbs were probably more like 32w so even 55W is above the design expectations. Obviously you can put any bulb in and see what happens, if they fail it is not critical since it is not the primary headlights and you probably have to replace them anyway to reach the goal.
I am back to my prior recommendation that if you need to see at a distance ahead for deer or pedestrians, whatever, that you can't get that out of the factory housings, have to put some with a tighter focus in their place instead. The factory housings would be great for looking at the deer you just hit, if it bounces off the front and lands 10' in front of the vehicle.
What I would do instead is get a brighter bulb for your headlights. If the bulb in them right now is old, it has some brightness degradation already, then if the lens is clouded, clean that up too with a refinishing kit or the abrasives you already have to refinish and polish them, or new headlight housings.
You might try something like GE Nighthawk Sport bulbs for the headlights if you don't want to invest in some further throwing replacement housings to put where the fog light housings are. They have a shorter lifespan as do the LED bulbs, so with any headlight "improvement" I'd keep spare bulbs in the vehicle for when they fail. The LED bulb claims of crazy long life, are somewhere between wishful thinking and lies when it is a drop-in replacement. A good long life LED light needs the whole housing to be a heatsink rather than an inch of surface area.
What I do in areas where deer are likely is slow down. The funny thing is, that since deer feed in an area where they can see my '98 parked outside, they seem to recognize it. Some have even come up to it after a near miss, snooping around. lol.