Nice looking tank you have going there! You should not see any ammonia or nitrite spikes with your current bioload. I would keep all lights running for 10 hours each day; no more than 11, but not less than 9. The key to avoiding the algae syndrome is to keep doing those water changes every 3-4 days for the first 2-3 weeks. Some algae will still show, but that's where an algae eating crew will come in handy. The AE crew is for preventative measures, not to rid your tank of existing algae. Oto's and SAE's are excellent choices. If you have the cash, you can invest in some Amano shrimps, but they aren't necessary.
Your main goal is to get those plants growing optimally in the least amount of time possible. You can start dosing nutrients, but never ever dose "a little extra." This is called luxury dosing, and new tanks will only grow algae. Only dose trace nutrients and a little nitrogen and phophorus. If you use KNO3 (stump remover), then you have no need to dose potassium at this point. I would also think about getting some extra CO2 in there asap (better sooner than later). Hope this helps!