No. Because it does not provide sound reasoning for its claim, namely that there is only one God, and Mohammed is his messenger other than merely stating it.
I like your pic
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Please read the Quran first. It contains way much more then what you said. I recommend Arberry's translation.
Is it pertinent?
No. Because it is a document written for the 7th century world. There may be some verses in the Koran that say that you should act a certain way, which aren't really pertinent or applicable to today's modern lifestyle. For example, fasting during Ramadan - which really has no use other than to encourage a holier-than-thou attitude. Or as other posters have noted encouraging wife-beating. Or encouraging religious wars.
Your statement is based on the assumption that the utility of religion is measured by the fact how it helps a person having a better lifestyle. This may be a secondary goal of religion, the primary goal (in my humble opinion) is that it fine tunes the relationship between man and God.
In Sufism we have this concept that every organ of the body also has a distinct way of remembering God. That way is hampered by incorrect diets, toxins in the body system, free radicals etc. Fasting is meant to release out those toxins and make the body system pure.
And again, you havent read the Quran and are not quite understanding the way that its teachings are used by Muslims.
Is it acceptable or proper?
Again, I would say that it's not acceptable. Not acceptable because in essence it attempts to establish Islam as "correct" and all other religions as "incorrect". So it cannot be accepted by Jews, Christians, Hindus, Buddhists, Atheists, and the like. For example, it also encourages people to cut off the hands of thieves, or to kill homosexuals. For that reason, it's both unacceptable and improper to the people that it offends. And therefore it can't really be "universal" in the end.
That's flat out wrong, to say that it establishes Islam as "correct" and all other religions as "incorrect". That is why you should read the Quran first. And note that in the Quran the word Islam usually denotes surrender or inner self-piety as opposed to the religion.
So in summary, I would say, read the Quran and a good book about Islam (eg Ideals and realities of Islam - Hossein Nasr) first.
Regards.