While many mods function the same due to the changes in configs dont expact tutorials you watch to give you the same output.
Set World Type to Biomes O' Plenty.
I highly recommend you to start with farming food as soon as possible before spice of life kicks in.
For running it on a server, remove the client only mods.
It can be played on systems with 4gb ram. Use Java 8 to run the pack. Some older systems may struggle.