Should i enroll in dialysis class or get experience first?

Hi!

So i just got my license last month...and recently just started looking for a job.
haven't heard from any hospitals yet; me and my mom are thinking that while waiting for a job, i should use my free time in doing some class like dialysis, phlebotomy, ACLS, to be more marketable and also because i really like to improve and learn new skills!

So i was wondering, to get certified as a dialysis nurse...do i need to have a medsurg or nursing experience first? so should i wait till i start working before i enroll for a dialysis class?

i'm really confuse...please help!

also, i really want to be my best as a new nurse...i can say that right now i feel like i've already forgotten most of the things we did in clinicals.. and i feel like i want to master inserting IV bcoz that's my biggest fear. So do u guys think enrolling and getting certified in IV training or my mom said "phlebotomy" would help me?

coz i honestly didnt get to insert an IV to a real patient while in school....we also didnt do ABG on a patient (my cousin did but she is in the Philippines...and i'm in the U.S) i wish i did...
so should i enroll in phlebotomy class as well?

i need advice...thanks so much!! ^^