Valencia Pride is a vigorous mango tree and you can expect probably 4 flushes or more per year until it starts to fruit. To protect it while its young, you need to build a structure around the tree out of Pipes and plastic material, almost like a greenhouse and find a way to heat it during the winter. When the tree gets larger, it should be more cold tolerant. You may need only to protect the trunk up to one limb in very cold weather like freezing(electric blanket if no chance of precip). I actually cover my young mangoes with a blanket and old C7 or C9 Christmas lights when it might frost. But I'm in Florida 9B. Do a search on cold weather protection for mangoes on this site. Should be lots of info for you. Good luck!
