Credit Score Management

I heard that you credit score would go up anywhere for 30-40 point if you pay a credit card off that is maxed out (if the balance is over a 1,000.00) Is this ture?? And if not does anyone know about what it would go up?

I have a high credit score (over 700) & several credit cards I am not using & want to cancel so that I carry just two. I know that canceling these cards would lower my available credit & thus my credit score. In about a year I plot to buy a new car. Would my score recover by then? I am current in all my bills & pay off my monthly balances on time.

I need to build my credit again and plotting on getting a secured credit card. My credit score now is 550 so i want to raise it up to 700+. Just curious as to how long will it take to build my score up again? How much points does a person gain in a month? Thanks.

I heard having too many credit cards can lower your FICO score even if you pay them full each month. How many can you get before they drop your score?
I had problem getting a credit card when I had no credit history and then after I finally got one, I had hard time getting another one, because banks said I had “too few” revolving accounts. Now I have 5 credit cards and only 1 of them carry balance. My balance to credit ratio is 6% and my FICO score is 740.

Thinkin about purchasing Suze Ormans credit repair kit.