Want to make Liminal Space / Dreamcore stuff - is MJ right?

I haven't paid for MJ yet, but I think I will relatively soon! Trying to decide and I have two main questions:

1: Title. I am really inspired by these accounts (included pics are just quick examples from google):

https://www.instagram.com/liminal.dreamscape/
https://www.instagram.com/anotherworldcore/

Any resources on how to actually make stuff like this? I've seen some incredible stuff here so far, so I am hoping someone can point me in the right direction for getting in the ballpark of this quality! and just to be clear: not trying to copy; I def have my own ideas I want to do but these is the baseline theme.

I'm not focused on Video stuff yet... but I'm sure I will be relatively soon... it seems that MJ is geared towards images which is that best for me, or are there other things (like Runway, veo, sora, etc.) good enough at making images like this as well as making videos?

Context (if it matters): I want to make album art and visual content for my electronic music.

2: Any advice on purchasing? It seems like there is no trial version anymore and I'm wondering if there is any advice for purchasing, like what plan is best for me, discount codes if any, or just anything that I should know... i really don't know much yet so any info would help.

Thanks for reading and ill appreciate any help!