nice little setup you got going bud. Is that the Optic1XL? 54W or 100W ?and for the watering bro, you need to water it several times a day, or even dripper to be honest. First grow, Id go with soil or cocoloco. They look hungry. Cocoloco you water when it starts to dry, and it forgiving so you can let it dry almost totally, or water everyday if you want. The perlite mix just doesnt have enough to hold water and drys out super fast. so basicly, all the roots that grow outside the small rockwool air prune themselves and just cant eat nutes living like that. If you want to go the solo cup route start to finish, thats fine, but for ease and risk of failure and stress, get the cocoloco bro, zon has it for a great price, but its a large heavy box, and your mailman will hate you,lol.. You want EASSSSSSEEEYY right now. everything else is on point. If you can afford it, Id do it right the first time, get the SuperRoot airpots from the zon, even 1 gallon if you want to stay small pots, get the cocoloco, and get megacrop nutes. super cheap for all those, but tellin ya, you will love it, and it wont be so stressful on the mind.
your almost there bud,