Light armor for more independent adventuring?
Solution 1:
A quick search claims that the light Dragonscale set would be your best bet if you're feeling a bit squishy. However, there are some other armors worth noting:
Miraak's Robes
With the other pieces of this set, you can get a lot of Magicka absorption.
Vampire Royal Armor
Found in the Castle Volkihar ruins, you should get some armor bonus from it, as well as increased Magicka regen.
Source: https://www.primagames.com/games/elder-scrolls-v-skyrim/strategy/Skyrim-top-10-inventory-items-armor