All of the armor and weapons in the game are tiered, meaning you find higher level variants of the same sets at random as you progress. Armor tiers are from mk 1 to mk 10 and scale as you level up. You could probably find a higher level version of the starting armor, but it'll still be inferior compared to other armor sets of the same level. Just use whatever you have to work with, you can't afford to be picky about it. You won't even be able to acquire the very best armors and weapons in the game until you're level 60 anyway, and that will take several playthroughs to achieve.