Are those LED 7" replacement units bought as a whole (like sealed beams) or are the "bulbs" replaceable?
You have to also consider other factors.
Since you're in Alaska you also need to consider an easy and convenient way of replacing those lights in case they break. LED lights are not going to be easily available in your local auto parts stores but the regular H4's will be.
Your best upgrade for the money would be Autopal, Hella, Bosch or Cibie 7" H4 E-code replacements instead of sealed beams. Your call whether to upgrade to overwattage bulbs - this board has a TON of info in the archives on which are the best bulbs to use in H4 configuration. Then, aim them properly so you get the light where you need it to be, and none where you don't.
Personally I'm running Bosch European headlights with Osram H4 Night Breaker plus bulbs in 55/60W setup with stock wiring and no relays added. I have more than enough light I need but over here most of the time the roads are clear, weather is nice and it hardly ever snows except on those very rare occasions. You might also want to consider adding some driving lights.
These are the standard Hella H4's (55/60W)
These are the Osram Night Breaker Plus H4's (also 55/60W)
My risk with the Osram Night Breaker is they'll have a shorter lifespan than standard H4's but the whiter light allows me to see better at night.
Ultimately, for the cost of getting those LEDs at $475 a pair:
TruckLite’s 7” LED Headlight - Trucklite Military LED Lamps
Versus getting H4 replacements ($180 a pair for most expensive Cibie's) + cost of H4 bulbs (say $20 for my Night Breakers or $50 for Sylvania Silverstars), plus the factor of having product support when you need it - you can see why the halogens are still at a great advantage over LEDs.