Should I keep applying to multiple jobs until I get a clinic job or wait?

I have applied for a total of 8 different clinic positions [about 2 weeks ago and have heard nothing from HR] at the hospital I am currently employed for working inpatient but clearly wanting to work outpatient. My manager is aware of this as well. Should I keep applying to the clinic job postings even though they are each in a different clinic department. Does this look bad to HR? I really want to work a job that is 4 ten hour shifts and so I have applied to those such as the pain clinic and GI lab. I would love to work in the pain clinic and my mother in law was recently hired to the pain rehab there. I thought potentially she may be able to put in a good word for me but who knows when a pain clinic post will show up. 

So my goal is to work in a clinic setting preferably 4 ten hour shifts but Monday through Friday 8 to 530 is okay too. 

Should I wait for what I really want? Even though I'm so burnt out on my inpatient floor? Or should I keep applying and see what doors open the soonest for me?