I really don't know the answer to that question, but hiring a PR group and paying for radio exposure probably won't get you what you want (of course lightening can always strike).

You need to perform locally to get some buzz going. If you don't perform, then just realize around 75,000 CD's are released each year* in the US using the normal distribution channels (major/minor/independent labels, CD-Baby, Amamzon, i_tunes, ...) and who knows how many other self-styled records are created. ... and 80% of these sell less than 100 units.

The odds are stacked against you -- I just think that paying for promotion is throwing money away. Once you get a local following (or a large internet/YouTube following), then you can revisit these pay for promotion things.

* 2010 Billboard numbers

"Good science comes in peer reviewed journals. Conspiracy theories come in YouTube videos. "
Kevin @ bandcamp: Crows Say Vee-Eh