Very nice scape look forward to seeing it grown in!
If you kept your filter running on another tank with fauna or dosing ammonia it would be fine, but if its all clean and needs re done...
I'd personally recommend the fish-less pure ammonia method if you can get the essentials:
-PURE ammonia (no other additives!) Ace hardware store sells a "janitor's strength ammonia" real cheap and 100% safe for cycling (used in all my tanks) still working through same first bottle after cycling.. 55+20+10+7+12+2+3... a LOOOT of gallons of tanks lol
-A needless syringe for measuring (you can use other options but this makes exact measurements easy) I got some needles baby 'food' medicine syringes (cc=ml)
-A test kit including tests for: ammonia, nitrite, nitrate (you probably already have this)
so helpful! explains cycling and has a converter on the right for liters, to UK to US gallons and an ammonia dosing calculator at the bottom. also sued when cycling all my tanks.
Cycling: I usually do for about 3ppm ammonia and wait for the BB to start growing and munching it. I'd recommend keeping photo period short and doing 1-2x a week water changes depending on how you plan to do that scheduled once fauna is in (good to get in habit now), don't forget to de-chlorinate ^^ Also if you plan to use a heater, put it in at the beginning, so the bacteria grow into a colony in the enviroment you plant to keep, same deal for any ph or hardness adjustments you plan to have.. do it now. Remember to test and re-dose ammonia as needed after a water change. Once you are starting to get nitrite and ammonia is going to 0ppm after 24 hours you can stop testing ammonia and just dose to get to the proper ppm daily (on water change day i just dose after water change).
In about 2 weeks start testing nitrite and wait till you see it hit 0ppm while still dosing ammonia daily and doing your water change scheduled (sorry, hitting 0ppm after a water change doesn't count, check next day after re-dose of ammonia). The nitrite consume bacteria always seem to take the longest to grow.
Keeping up on the water changes helps reduce nitrate build up at the end of the cycle so you don't have off the chart -could kill anything but a snail (not to mention algae explosive levels)- nitrates.
BB loves oxygenated water, so getting a lot of water movement or adding an airstone can help with cycling process (it won't make it go waaay faster but it doesn't hurt.. as long as it doesn't end up uprooting your plants from the current).
I have 0 experience with co2 systems but theoretically you may need to increase co2 during cycling since ammonia/nitrogen levels will be high in the tank... may also need to dose ferts.. but don't know how much nutrients your substrate will still have for plants (have not worked with that product).