It is doable to have a low to moderate light tank without co2. You'll have to use a little care in selecting your species, but you can still have a very attractive tank.
1. Use fine gravel. Plants will grow in just gravel (root tabs or other ferts will help). I do feel my plants (personal opinion) do better with a mix of fluorite and gravel.
2. 50/50 bulbs are for salt water. If you want to reduce the amount of light, leave a switch off or a bulb out (not sure if that's an option with the lights you've chosen).
3. You'll want ammonia, nitrite, and nitrate to keep tabs on cycling your tank. Phosphate is useful (but not necessary in low/mod light) for plants. You can also live without gh and kh test kits (but again sometimes it's nice to know)
4. Your fertilizer needs will depend on the fish load, how much you feed, and your quantity and varieties of plants. Root tabs for things like swords (after you're sure you're done moving them around) and a few capfuls of liquid once a week would really give the plants a boost.
5. Not using co2 will limit your plant choices, but you will still have a large variety of plants to choose from. Consider these to start: swords, crypts, and anubias all do will with moderate light and will grow nicely without co2. Bacopa carolina and hyrophila difformis will both grow well in moderate light without co2. Water sprite is another plant that will work in those conditions. From there it's a case of testing plants that are listed as easy or moderate and finding out which ones will grow in the conditions you are willing to provide.