I see no problem using mods which add spells, but if you use mods which make spells much more powerful, there will be a balance break, but hey if you want to do it. This mod makes runes the top spell to have. Up to 6 and up to 250 feet distance.

As for perks, they always consist in completing major and known quests, so just google for when you don't know one, for example

https://www.ign.com/wikis/the-elder-scro...nes_Quests