3 weeks solo - Guatemala or southern Mexico?

Hello, I've got 3 weeks to travel late July early August and wanted some advice. As of now, I'm leaning towards GUA but feel free to change my mind. I do love myself some Mezcal. See below layout for about me.

Basic trip layout

• ATL/ORL (depending on work) to GUA then straight to Antigua
  
  • Acatenango hike
  • social hostel
  • maybe a coffee farm
    • 4 days?
• Lake Atitlan
  • Panajachel (recommended to me)
  • San Pedro
    • social hostel
    • might do the volcano hike here as well if I'm feeling it
  • Chichicastenango markets
  • San Marcos La Laguna?
  • reset day
    • 5 days?
• Semuc Champley and Lanquin
  • really long shuttle...
  • Jungle hostel
  • Cave tours, pools, views, river tubing
    • 3 days?
• Flores
  • Tikal sunset tour buffer day
    • I've heard it's annoying to get here and tourism is crazy so might cut it and go somewhere random...
• El Mirador
  • hike in explore hike out with tour these usually run about 5 days, I like this sort of stuff and am in shape to do it so why not
  • fly flores GUA then back to ATL/ORL then back to uni

Recommendations, advice or info about Mexico would be most welcome.

(Good local food/bars would be amazing as with good view spots etc)

will prob take chicken bus to save money or get myself a dirtbike

A little about myself

I'm 20m and live in the USA. My family is from Czech Republic. This trip will mark country 30 most of those being in eastern Europe which I backpacked 2 summers ago. This will be my first time solo. To be totally honest my Spanish is absolutely terrible. Moneys tight

For those of you wondering how I've done 30 countries by 19. I work as a bouncer during school and construction (welder) + golf course (double full time) in summers. Pretty much all my money goes to ROTH IRA, then dirtbike, then travel.

Roll Tide.