Sample preparation for MiSeq

[Mizraelson]

Hi,
I have a question library preparation for MiSeq. I want to sequence the mix of libraries, which length ranges from 300 to 700 bp. I know that sequenator preferably works with shorter sequences. So the question is: In what ratio do I have to mix the libraries of different lengths (ex 300, 500 and 700 bp) so that they have a uniform coverage.

[microgirl123]

Unfortunately, I think this would be trial and error. I would just go ahead and mix them in equimolar amounts.