I am pretty confident that he can handle it, his Lexile is pushing 1200 iirc. Sorry I wasn't more clear, I think I got distracted RL when I made this post earlier and didn't really finish my thought. My question is more along the lines of do you think I should have him read other series before diving into the Malazan series. Like will he be disappointed with most other books the rest of his life if he reads Malzan at 13? Should I get him the Wheel of Time Series first? What about Ice & Fire?
Series that he has read (in no particular order) are...
Eragon
Percy Jackson
Harry Potter
Diary of a Wimpy Kid
Belgariad
Myth Series by Robert Asprin
Lord of the Rings
Wings of Fire
I went with option 4, not even knowing this was a thing. When I was going through the Dune series I looked at those books written by his son and "noped" the fuck out.
I really love the Malazan books... but, IMO, Malazan is something better enjoyed with more perspective and life experience. The content is really heavy, but can also really subtle, and I think it's easy to miss so much of what's there if you're not a mature reader and at least somewhat a mature person.
I'm casting a wide net, but here are a handful of ones I've liked, and that I'd recommend for your son:
Kingkiller Chronicles - it's easy to poke holes if you want to, but it's really an enjoyable series with great characters, especially for a younger reader
Riyria Revelations --> Riyria Chronicles - clever, sharp, fun character duo
Legends of the First Empire --> prequel set in the Ryiria universe
Dresden Files - dude, this needs to be top of the list. for anyone, but especially a young reader
Cycle of Arawn --> Cycle of Galand - another really fun character duo in a great magical realism world, great for a young reader
Witcher Series - I mean, it's the adventures of Geralt the Witcher... cmon
Saga of the Forgotten Warrior - magical realism fantasy with a little bit of grimdark going on
The Good Guys - light hearted litRPG
Bobiverse - fun sci fi with a pretty unique angle
Expeditionary Force - fun sci fi kinda like a better version of Independence Day
Undying Mercenaries - fun sci fi kinda like Starship Troopers