This mod adds a pair of boots with an enchantment that prevents damage from falling and gives 4 different options for maximum jump heights, and a Spell with the same effect.       
                                                                          
No console commands are needed to change your jump height.
If you want the normal Skyrim jump height, just remove the boots or select the dispel option in the spell

Notes:
1 - THIS MOD REQUIRES SKSE to be installed. The regular Skyrim game doesn't allow access through papyrus to the only option (which I can find) that affects the jump height, so SKSE is needed.
2 - The boots can be disenchanted and the enchantment placed on other items. However, the effects do not multiply. Also, only the spell or the enchantment can be in use at any one time. I've tried to make it difficult to have both active, so if you manage it please let me how you did it, as I'd like to fix it ;) 
3 -  The boots and Spell Tome can be crafted at the forge using Empowered Diagrams. These will appear in random loot rewards from lvl 23. 
4 - If you don't want to wait, search for Help "Empowered Diagram" in the console.
5 - The spell is only active during your current game. If you have to restart Skyrim you will need to recast the spell or reequip the boots. 
Let me know if there are any problems.
Please rate if you like my mod!