[islandguitar]

What a nice bit of choices you have! I have to agree with those that are paying attention to the guitars you already have as an indicator of your previous choices. This could mean the LS/Blackwood.
What I'm picking up from this thread is that some are mentioning Redwood, while others are mentioning LS Redwood. I believe I recall Tim McKnight himself exclaiming the virtues of LS Redwood here on AGF some time ago. So much so, that it's in its own category all on its own. It all comes down to the build properties, the builder and of course the extraordinary color that this wood offers under finish. But, LS Redwood is special stuff with its own properties.
When Tom Doerr built my LS Redwood/Cocobolo Legacy, he called LS Redwood "the real deal"...........others who build and know these tonewoods say similar things.
Both Pernambuco and LS Redwood will certainly give your guitar build a very distinctive feature........they are rare and hard to come by and highly desirable by many. I'd vote for the LS/Blackwood .......The LS Redwood will be the soundboard and could likely have more overall effect on your guitar's eventual sound when built by master builder Tim! But, you can't go wrong with either choice! Have fun!!