You can't go wrong with Timber. They stand behind their product, plus RainDan from Timber is active on the boards if you have any issues with their product.
You're jumping the gun. Still too early to tell. How old is it anyway? They usually start to show 6~7 weeks in. Give it a little more time and keep you're fingers crossed.
Like @xtsho said, Ditch the bag. It will only do more harm than good. Seedlings need all the fresh air they can get. Any type of humidity dome, or a 'bag' in this case, will cause them to dampen off and die rapidly.
Does that same book that tells you to Flush also tell you to boil the roots and drive a nail through the stalk?
And Dr. Who, If you write a book I'd buy it. Not that I will need it but just to support you.
Sure you can keep them together. I bought 8 autoflower seeds and kept the male and female together. Now i have about 100 seeds to test out. Hope it all works out for you.
If you growing from seed you don't want a 'dome' or anything like that. Just keep a careful eye on them to make sure they don't dry out toomuch. Light moisture and fresh air is what seedlings prefer.