You need to firstly flash BL and CP provided in OP using ODIN. After that you can flash ROM in TWRP 22.214.171.124 after wiping cache, dalvik, system and data.
It is so easy to say something is laggy and choppy and provide no info or proof about it. Believe me, it is very easy. You can write it on any ROM/kernel/app/script/module development thread on any Android Forum. But debugging and troubleshoot require proof rather than statement. And do not forget that this project is EOL long time ago.
READ OP! It says what you need to do for notifications:
AryaMod V9 don't boot on N900V due to incompatible bootloader.
What is the best procedure to learn how to root a phone and the best software to install on android I am just leaning about phones