This is a modpack that I made for my friends to play on a server. It incorporates a lot of tech mods for automation as well as performance mods. Although intended for a group, this is still playable solo. 

This is a pixelmon pack that involves the player to train up their favourite pokemon and develop Tech allows for automation with the help of mods like mekanism, Create and immersive engineering. Alongside that mod, this pack includes two types of storage, one being Refined storage for those who want an efficient storage device and Iron chests for those who want you use the old but reliable. 
Within this pack, it has better terrain generation in the overworld with the help of the tectonic and William Wythers Overhauled Overworld mod, whilst in the nether we have the Incendium mod, and for the end, Nullscape, all of these mods are compatible with pixelmon so there isn't any worries. 

Recommended Ram: 

4GB - Bare minimum required
6-8GB - Playable for a smooth experience
8-10GB - Able to max out all settings 

Disclaimer: 

This Mod does incorporate the Distant Horizons and William Wythers Overhaul Overworld mod, so what I recommend is using a pre-generated world and then adding Distant Horizons and putting it to Pre-existing to get rid of those errors.