Learning your first language is hard. Then it is easy to pick up any other language, as it is mostly just a change in syntax.
As a programmer.
then do it! i could see what i could do with textures possibly do the planet first and ill see what i can do about the textures.TBH, I could probably make a new planet in less than an hour. Assuming I just copied vanilla world generation code and changed a few blocks around. Give me a full day and I could get you new ores and creatures. It would have crappy textures, but it would be easily doable.
Because I am on vacation, and I would like to make a tutorial out of my planet code so there might be more planets some day in the future...then do it! i could see what i could do with textures possibly do the planet first and ill see what i can do about the textures.