my two cents, with that amount of plant density and those plant species I wouldn't do CO2 or try to get higher lighting. The fish should produce enough c02 for you and higher light isn't needed for those species, will probably just boost algae growth. The hair algae you've got looks great, but some other types can be a real pain, the green slimy stuff in particular. Boosting the nutrients and light without having enough plant density to outcompete the algae can lead to blooms very quickly.
Tank looking great as is! I'd see how the plants grow as is before adjusting anything.
Tank looking great as is! I'd see how the plants grow as is before adjusting anything.