Hello Bootsy,
if you're looking for the lightest rod in terms of line weight you might consider the Sage TXL. They make a 7'10" for a #000 line that weighs 41 grammes! You'll have to buy a Sage line with it, cause to my knowledge no one else makes a #000 line

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However, when fishing such small streams you'll often find yourself in a situation where you will be casting very little or even no line at all. To cast and turn over only a leader and a light fly properly you'll need a rod with a bit more mass (inherent weight). Just ended an interesting debate on the subject here :
Rods & rods
Like Mostyn, I would opt for a nice splitcane...but tastes can differ

...Vision Cult comes in a 7'6" #3 (nice rod too)
regards,
Johan