Those are other things I need to purchase I just couldn’t wait to pop these seeds
OK - you're enthusiastic and decided WTF "I'll just go for it". It's your first grow and it's understandable, but now's the time for a dose of reality.
Autos and photos don't really belong together unless the photos are in veg. Autos do best with an 18/6 or 20/4 light cycle throughout their grow cycle. Photos need a minimum of 16hrs of light (some will tolerate less but 16 is safe) while in veg and no more than 14 hrs of light a day when in flower.
So your choices are
1) Light deprive your autos and flower your photos on a 12/12 or 13/11 light schedule
2) If the afghan autos are a short cycle strain (8-9 weeks seed to harvest) keep your photos in veg at 18/6 until the autos are done and then flower the photos at 12/12.
3) Keep one or the other and grow them "properly".
Given your situation, I think option 2 would be you best choice ... but you'll need to keep topping the photos to keep them short. You'll grow out your autos and the have some really big shrubs for the photos.
And speaking of light ... what you have will keep your plants alive, but they won't be happy about it. If all you can afford right now is a second light like you have, then that's what you need to do. It isn't a great solution, but right now based on what you're telling us, it's the only solution. Just bear in mind that if you're going to grow, you'll need to invest in good lights at some point or you'll never realize the potential of your plants