Ryan,
Typically bows perform best near or at the peak poundage. Really depends what poundage is best for you! Figure out what is most comfortable and accurate and you can make almost any arrow fly, with some work.
The tests I use is either bare shaft or paper testing. I preffer the bare shaft method. Hopefully, this helps. Any good archery shop should be able to assist you in tunning it propperly. But after you get you field tips flying well, you should broadhead tune as well. If you do not have any good shops in the area or someone to help, send me a PM and I'll try to help you out. Especially if you fly fish!!! No just joking. Good luck
I think a LOT of the issues with "performance" at peak poundage have been addressed by the mfr's, today....and that it's no longer the issue it used to be (If everyhting I experience, read, etc... is correct). To me....there's difference between "optimal performance" (which would be hard to argue against.....because if your bow is max'd out....it's going to be faster) and where your bow "wants" to be shot (or likes to be shot).
To find this.....you're going to have to go through all the steps td told you at each poundage you wish to experiment at. That's all I was saying in my response. You're going to have to log some serious shooting......or simply accept that you're "OK" with how it's performing at a certain poundage. Either way....you won't know until you try it (at different poundages).
Good luck.