There is so much to say, but so many threads that cover this -

My 2 cents - get your private and enjoy flying for fun. You're looking at tremendous expense for a possible career. Emphasis on possible. And where that career may be is anyone's guess. CFI? Charter? Regional? Night freight? Maybe, possibly a major someday? Maybe? Base your best years on maybes, someday's and hope so's?
Can you survive on half of your current salary for the next 5 years?
Hate to be Debbie Downer, but this job ain't what it once was.

I used to be more optistmic about guys getting into this business - it's good to help others avoid land mines - but the last 5 years of stagnation, bankruptcy wages, people who won't retire, oil speculation, terrorism, furloughs, etc. etc. have tarnished my otherwise rosey outlook. Sorry.

Have a nice day.