Marion
Just for voice and guitar, which I think is what you are talking about, the sort of domestic equipment that loads of people have is more than adequate to make a recording that is OK for radio. You don't reallly need any fancy studio technology. Sounds as if speed is what you need here: if there is an opportunity, go for it, don't waste time and money looking for a super-duper professional finish. Unnecessary. Do the best you(or your friends) can by tomorrow morning!
Good luck: I know your songs, they are very very good. Take any opportunity to get them out in front of the public.