As a Christian, I don't ignore "inconsistencies", I do everything in my power (and ask for his help) to resolve them...allow me to demonstrate with your so-called "inconsistencies" in the creation story.
The earth-centric perspective of Genesis does NOT suggest the whole thing was made up. For one, an omnipotent God would KNOW that the people he told that story to for the first time would have NEVER understood anything more complex...heck, they struggled even with what he did say because it was beyond their comprehension. Yes, it reads like a children's fairy tale...to us...but that makes perfect sense because compared to our understanding of the universe, he WAS telling the story to children!
More importantly, the bible clearly wasn't written to explain how God created the universe...it exists to teach human beings what God created them to be and do. Of course it doesn't provide details about the universe or even the nature of this planet...God knew that we would be able to discover the answers to those questions on our own. Instead, it answers the one question that we can't answer without his help...what is his purpose for us.
Again, you have to consider that the majority of people living on this planet today don't understand relativity. In addition, you have no way of knowing exactly when relativity came into existence. Relativity doesn't exist in a void...it exists in this universe...and Genesis said that God existed in the void before the universe existed. We couldn't create the universe in seven days, but we are a part of this universe...God is beyond it and thus, we can't possibly say that he didn't create everything in seven days.
Why would it take him seven days...don't know...maybe he was simply setting an example for us...a time reference that he later used to advise us to work from sunup to sundown six days a week...rest each night...and then take a full day of rest on the seventh. Not bad advice to maximize the productivity of human beings!
Based on our understanding of the environment we live in now, yes, 150 organisms (75 mating pairs) is a good average estimate of the number required to create a growing/thriving population. However, you have NO way of knowing that this was always the case. Consider the fact that we can create a new breed of dog in about 40 years starting with just two animals...and yes, if we keep inbreeding for 40 or more years to force the breed characteristics we desire, we will create a breed that suffers from any number of hereditary genetic flaws as we repeatedly replicate genetic flaws that existed in the first two dogs. ...but if Adam and Eve had no genetic flaws and, as the bible states, they lived for hundreds of years (another indication they were far stronger genetically than we are today), it is entirely feasible that two genetically perfect humans could create a population of thousands of people with few (if any) genetic flaws.
Of course the listing of things created by days is vague...again, you think that people who didn't have access to a telescope, to knowledge of chemistry, physics, biology, and more would have understood something more complex than the simplistic story God told them? Would a two-year-old understand the complete, scientifically detailed answer to the question, "where do babies come from"?...of course not...and a parent would be stupid to try to explain fertilization, cell division, gestation, and more to a child that was still learning to talk. Instead, most parents will offer an explanation the child will understand (e.g., the stork brought you from the baby factory)...and some parents are smart enough to tell their children the truth...tailored to their level (e.g., mommy and daddy love each other and that love created a baby...mommy carried the baby in her tummy until it was time to go to the hospital).
As you noted this is just the first chapter of the bible (the first two actually)...and there are still more like 1,895 to go (no where near 10,000). But doesn't the fact that God devoted just 12 chapters to describing what happened on this planet from the beginning until the time of the flood tell you that you're putting more weight on the questions it answers than he did! Even if the bible did say that the earth was only about 6,000 years old (and it doesn't!), doesn't the fact that God devoted just 1% of the story to describing the first 2,000 years and then spent the remaining 99% to describe the next 2,000 years tell you that he had no desire to explain how he created the universe...he just wanted us to accept that he did before he started answering the important questions?