Bush peas

I plan to sow peas in the back garden this evening and wanted to pick up a packet or two of Burpee Primetime bush peas.

Anyone here have experience growing bush style peas? I do square foot gardening, and am trying to get an idea what kind of spacing to follow.

Also what are the yields like - comparable to vining pea varieties like Wando, Lincoln or Sugar Snap?

Any other general advice for growing peas? Anyone recommend a good soil inoculant?