In two weeks, fermentation should be complete, but again, the best practice is to take hydrometer readings three days apart and if they're stable, it's safe to bottle.
With a gallon of cider, you might want to have more than 4-5 bottles on hand. A gallon is about ten 12 oz. bottles. You may lose a little to the lees, but you might add just a little volume with your priming sugar solution.
Generally, most people carbonate for more than four days. This isn't a high gravity cider, so it should carbonate rather quickly, but were it my cider, I'd probably give it at least a week at room temperature. If you chill it too early, you may impede the carbonation process leaving the cider undercarbonated.
If you wait until primary fermentation is complete and then measure your priming sugar accurately, there is no need to pasteurize at all. People pasteurize in order to stop fermentation before it has finished. This is often done to halt the fermentation before the yeast have consumed all of the fermentable sugar as the brewer wants to leave some residual sweetness behind. If you let your cider completely ferment, making a dry cider, there's nothing left for the yeast to consume and therefore no need to halt the fermentation process.
I understand the healthy respect for bottle bombs, as I share it, but so long as you're sure primary fermentation is complete and use the correct amount of priming sugar and mix it in relatively well, you shouldn't have any issues.