If after 5 months you don't succeed..
Then what?
If the result is that you have to go back
to living a 9-5 live, I reckon it's worth a
shot doing this internet marketing thing.
If the result is that your entire family gotta
live on the streets, I think you should really
think twice.
Get a job, and work on IM part-time.
Use the income to grow the business, and use
whatever time you have left to work on the
business.
"Slaving hours and hours doing IM" as a newbie
is a myth, IMHO.
I don't know if you really are a newbie, but when
a newbie slaves in front of the computer, they
are wasting much of their time checking forums
and blogs and other unproductive stuff.
The time you have leftover from your job should be
sufficient for you to work on your business.
Really.
Hate the job?
Good.
Work harder so you can quit sooner.