Recommendations

I am new to the epoxy game and not sure what product would be best for my needs. I have a live edge that split down the middle and has some pockets missing wood that I want to fill with epoxy. I have been told because I live in a colder climate it would be best to use a quick setting epoxy and do multiple pours instead of one deep pour. Do people agree with that? Also what brand and product do you suggest for my needs?