Thanks, Dave!

I'd play around with pedal order.
As a rule (although there are no hard and fast rules in this thing), you want your modulation devices before gain-inducing devices.
The EQ is a matter of taste, but usually work well AFTER distortions.
Volume is a preference, too, it can go at the beginning or the end. If it's at the beginning, and it's driving your distortion, then it will also affect your gain, if it's after the dist, then it will affect volume more.
I would try wah>chorus>delay>metal zone>EQ>volume. The tuner placement is pretty much irrelevant.
You also have a lot of buffered bypass pedals there, and while a buffered bypass is a good idea, when you start stacking a lot of them, it can add noise, even in bypass.
Maybe look into a bypass box, or something, too.
But, as said above, start with one pedal, and see if there is hiss, then add a pedal at a time--bypassed--and see if it adds up.