What is most important

According to your doubt, let me tell you that all these are essentials.

But "Moot Courts" are totally different than the real life procedures in a Court of Law.

Thus, on my personal suggestion, it would be better if you join an internship under a lawyer as a legal apprentice.
This would help you t learn :-
1.) Procedures of Court,
2.) Filing & Drafting,
3.) Writing Research Paper and
4.) Handling Clients.

These aspects would help you to become a great lawyer soon enough.

Best of Luck for your future.

Regards
Kevin M. Paul