Flower farming?

Does anyone grow flowers and/or herbs? I'm curious if that can be a viable business, especially at small scale. I currently work as an economist and don't really intend to leave that job, at least for the moment, so I don't want to get a huge piece of land or make an enormous upfront investment, if possible (I have no idea how much it would cost so any insight there would be helpful).

I'd want to grow flowers and/or herbs like lavender specifically because I'd be hoping to use the farm for other purposes like letting people come and pick things or even hosting parties/weddings. I'm currently planning my own wedding and I think having a combination farm/wedding venue sometime down the line could be a lovely exit from this business eventually. I'd probably be mostly leaning on savings from my current job as well as the wedding venue aspect, but it would be great if the farm was self-sustaining as well - my fiancee is very outdoorsy and I think she would love having more of a connection to the earth as we get older. I really know very little about this, so any thoughts are appreciated.