I have 8 aquascape fw tanks. 1cold water, 1 low tech Discus, 1 low tech brackish, and 7 with HO led and co2 systems.
If you plan on using CO2, you will want to have your tank water pretty hard..the harder the water is more co2 you can safely pump and the more your plants will grow.
After you get your tank filled and hardscaped, I suggest you throw some plain amonia in it.. the buy your self a nutrient sponge cheap plant like anacharis... it will speed up the cycle a little bit. Some freshwater tanks can take 6 weeks to cycle