I have picked up a LQ4 and 4l80e and I am starting to get all my parts together for my swap in my 1967 camaro. I picked up a set of 243 heads and an LS6 intake. I am looking at some recommended options from you guys on a cam, converter and what else I should do while it's apart. I'm not looking to spend a ton. The heads I purchased have roughly 40k on them, I was told I should mill them to 60cc, is there anything else I should do to them? I am just looking at different options. My goal is to have roughly 420-480hp and sound like a beast but easy to drive on the streets. Below are some parts that I have.

LS6 intake
Stock injectors and rails
Hooker 1 3/4 long tube headers
243 heads
Cam- stock
Converter-stock

I was recommended a setup by someone on this forum
-Mill heads to 60cc
-Btr dual springs .660lift
-Ls7 lifter
-Stock rockers with comp trunion upgrade
-cam motion Titan 4