Here's a link
to the Brewing Network podcast, and here's a thread
here on HBT that talks about it. I think your recipe looks good aside from the roasted barley, but it doesn't look like it'll make Lagunita's.
I like Jamil's recipe. You can replace the domestic two row with light/extra light/golden extracts. The Munich malt will give it that bread-y character that Lag's is known for and the 1968 yeast seems like a much better choice, IMO. 1098 is dry and minerally, and IME doesn't give me the character that I'm looking for with English yeast. I haven't brewed a Lagunita's clone, but I've drank a lot of it, and I think the cascade/centennial combo is much more accurate, as is the horizon for bittering. You want a nice, clean bitterness in that beer, which I can say from experience Horizon hops will provide. I've never used clusters.
Again, you're recipe looks like it'll make a good, hoppy pale ale, but if you're going for a clone of Lag's, check out the links I posted.