I'll specifically address the bounty comments.
Are there differences between stacking perks, stacking enchantments, and stacking a combination of the two?
Perks stack multiplicatively with themselves, so for example the "Agile Defender 5" perk, which increases Light Armor rating by 100%, when combined with "Custom Fit", which increases Light Armor rating by 25% when wearing a full set, will result in a 250% total increase in Light Armor defense.
On the other hand, enchantments and potions use the same effect, which you can see under the "Active effects" tab in the "Magic" menu, and they will all stack additively with themselves. So for example a "Fortify One-Handed" enchantment with 20% strength, when combined with a "Potion of Fortify One-Handed" with 40% strength, will result in a 60% total increase in One-Handed weapon damage.
These two categories stack multiplicatively with each other, so drinking a "Potion of Fortify Archery" with 50% strength while having the "Overdraw 5" perk, which increases Bow damage by 100%, will result in a 300% total increase in Bow damage.