Circular saw foamie build? Is it possible?

I'm wondering, if it's possible to build a foamie with a minimum number of tools. Would that change the design much?
I use table saws, chop saws, circular saws, jig saws, and a whole host of other tools. But what about first time builders that don't have all that, or people who don't have the space for all those tools? Is there a design that can minimize the number of tools?
Just for fun, lets use this design as a starting point.
I think a circular saw and 2 clamps and a straight edge is all one needs. Am I missing anything? Tell me what tool I am missing, and what it would be used for.

Mike...
P.S. Link to design... viewtopic.php?p=1136107#p1136107
I use table saws, chop saws, circular saws, jig saws, and a whole host of other tools. But what about first time builders that don't have all that, or people who don't have the space for all those tools? Is there a design that can minimize the number of tools?
Just for fun, lets use this design as a starting point.
I think a circular saw and 2 clamps and a straight edge is all one needs. Am I missing anything? Tell me what tool I am missing, and what it would be used for.
Mike...
P.S. Link to design... viewtopic.php?p=1136107#p1136107