+1 for Wendler. Do you have your spreadsheet all sorted?
booyaka, as you're starting off very light on squats spend some time making sure you get it right, it will pay off later. If you're not sure on form have a read around, check out rippetoe and 'so you think you can squat' videos. Also post up a video here. Better to start off how you mean to go on, I rarely see someone squat or deadlift properly in the gym.
That's a pretty awesome weight!Not done that particular routine, but did a stint of 20reppers, back when i was a "superheavyweight". Best was 135x20
20rep squats are evil!