The time is right when you are paying 1) too much in rent, 2) you have a stable job, 3) It is in an area you want to be in for years and will able to afford to if you lost your current job.
You don't want to use all of your cash, just to get into a home, you also don't want o chase the market and buy out of fear that you won't be able to buy next year.
I'd avoid a monthly PMI payment if I could. I'd take either a higher rate or taking a single mortgage insurance payment. Think of PMI some thing like car insurance. You can pay $2000 to have insurance for life or pay $200 a month an unknown amount of time. You can even ask the seller to pay the $2000 for you
The right time to buy was 2011 to early 2013 year. I won't know if today is the right time to buy until 2 years from now , my crystal ball isn't working right now. Hind sight is 20/20
Anyway, you have more options than you think. Also just because you found the information on a creditable website like CNN, doesn't mean it is completely accurate. Ask real professional questions.
PMI, FHA MI, get incorrectly described all the time, because things change.
To add to that 78% thing described earlier, it is based on the regular scheduled payments of when it hits 78% with a minimum of 5 years, when rates were falling and values were increasing , people would just refi out into a new loan. I don't think you'll see that as much now.
If you are offered a 80% 1st and a 2nd to avoid PMI, you must consider what the interest rate on that 2nd will be , It might be adjustable it might be fixed at a higher rate.
There are a couple of ways to approach this, ask a lender , broker, credit unit ,where ever, how much can I afford
Or go the route
I saw a house for $xxx,xxx ,can I get a loan for it .
You are in LA , you are started to look online. When you get serious I strongly recommend you work with a real local person.
How much is your rent?
How much are homes you think you want to buy?
How long do you plan to live there.
I don't know if it is the right time to buy but I am constantly looking.
BTW , yesterday was the time to LOCK your loans versus today.