yes, i think those are all legitimate concerns and investigating and reading up on what you believe is a great idea.
my point is this - my faith is NOT based on the bible. it is based on a revelation in my heart that God is real and that love is the highest and most important virtue we can participate in. if someone gave me proof the entire bible was a forgery today, my faith would not change. i know God is real, and i know that love is the most real thing in the world. i am not saying i always live up to this standard or that i don't doubt, because i have my deep deep trials as everyone does.
but the thing is that you have to have a real feeling for God in your heart. all these questions about the bible are fine, go ahead and pursue them, but if you feed one hungry person today you will have gone further into understanding what Jesus is all about than if you spent the next ten years studying the bible.
do yourself a favor, go find a homeless person in your city today buy him a cup of soup and give him $5. you will feel the love of God in your heart, and that is something that cannot be denied.
love is real, the bible is full of dead words.
"the letter killeth but the spirit giveth life." - Jesus