I'm a bit of a novice with all things strongman. My pick is better than my ability to get it up to the platform. I've lapped 315+ with tacky, but wasn't able to get it up very far, just don't have the hip drive in me yet. I was also 175# myself last time I was on stones (I'm busy geting fat now). I've learned everything I know from "TWR" over on p&b. I train at his place semi-regularly.
How low do you go when doing zerchers? About to where the bar would hit your knees? Thinking back, I did a little deadlift/zercher combo to get up an axle recently. Worked great.