I work nights on a PCU, our ratio is typically 1:4 up to 1:6, it is actually pretty common to get 6 pts. Though I have to admit we are probably on the lower acuity level of PCU's, maybe this is a similar position to what you are being offered. We take some drips, cardizem, insulin, amio, lasix, bumex, integrilin, and occasionally NTG but thats about the extent of it. We get some fresh heart caths, pacers, chest tubes but really nothing too intense. But we also take some chest pain obs pt's too so we kind of get a mix of somewhat high acuity and some pretty independent patients. With 6 pts I feel like Im pretty maxed out, 7 pts doesn't seem safe, if one of the pts decide they want to take a turn for the worse on you now youre in a really bad spot.