Committing evil with the intention of repenting later

Q: In Islam it's all about the intention. I read that if a person had an intention to commit a sin and he refrained from that for some other reason than Allah, he will be punished for that sin. So according to this, will a person be punished for being ready to commit shirk with the idea of asking forgiveness? Because I am suffering from waswas for long time. For some reason I thought asking doubt is shirk then I thought of doing that and ask forgiveness from Allah after that I got to know that asking doubt is not shirk but I was ready to ask doubt so will I be punished for this? Do I have to say the kalima and do sahada again?

Solemnizing the nikaah

Q: Me and my wife to be along with my parents and her parents sat together to confirm our marriage proposal. Both parents asked us both if we are happy with each to get married and we both replied saying yes we are. Is our nikkah done and can we speak to each other now.

Giving one's child for adoption

Q: I have been married for the past fourteen years now and we have no children though all our reports are normal (both of us). My wife's brother has a daughter and he is younger in age, he used to feel bad about this and finally took some strength and spoke to me that they will give birth to a new born and will hand it over to us. His wife is pregnant now. It was agreed between us, him, his family and the family of his wife and they are also very happy to give us the baby, they do not want a new child for themselves as they said we are happy with one child. Is this allowed as per Islam? Now the thing is that his wife is due in this month for delivery and we have no option for the same. But then too please let me know in the light of Islam.

Will an object be impure if there are no signs of impurity visible?

Q:

1. If someone gets scratched by a persons nail accidently and blood begins to flow or a person gets cut with a knife and blood begins to flow but no blood can apparently be seen by the naked eye on the person (who scratched you) nail nor can blood be apparently seen by the naked eye on the knife, does the person who scratched you have to wash his nail or does the knife become napaak and have to be washed even though you can apparently see no blood with your naked eye?

2. In a similar scenario, if you are not sure when or which object cut you and caused blood to flow and no blood can apparently be seen on anything or a glass shatters and a piece cuts you but you are not sure which tiny piece that is now scattered on the floor cut you and no blood can apparently be seen on any of the pieces, do you regard everything in the vicinity as napaak even though no blood can apparently be seen by you on anything?