First time seeds germinated, help w/next step

I checked this morning and I have 6 beautiful white widow seeds with tap roots just barely sticking out of each of them. They should be ready to transplant by this evening I’m hoping. I got a tray holding six rapid root plugs, given to me by an indoor grow store. This is not where I had planned to plant the germinated seeds but the store did not have the soil I need and won’t for a few days. Please help with these burning questions I have!
Will the root plugs work if I plant the germinated seeds in them?
How far down should I plant the germinated seeds in the root plug?
How long will the seedling grow in the root plug?
Directly after planting the seeds, what type of temp. Humidity, and light schedule should I do?
Also at what distance should I place the light after planting? I do not want to burn my seedlings.
many and all help/advice is so greatly appreciated!

Go to any store today and buy a bag of Black Gold Seedling Mix. They sell it everywhere including grocery stores. And stop germinating in towels. Absolutely unnecessary and just another complication.