Serge, DO NOT use that nice new blade you are getting from Shane to cut that large of a cut, it will heat up too much and warp on you and it will be no good for nothing. See the blade has no set to the teeth and will rub against the wood, so the deeper the cut, the more surface area in contact with the wood, the more heat and there goes your nice new blade, good for nothing. You want to go to HD or REVY and get yourself a freud Diablo thin kerf saw blade, should cost about $15-$20. The cut is about 1/16", I know it's large (related to the 0.025" blade) but it can handle about a 3-1/2" cut (in stages of course) and not warp.
Also, not to harp on you but you realy want to make sure that gap is well outside of the plate area anywhere. If you draw the outline of the guitar on the plate, is the gap inside the guitar? You don't what this even under the fretboard (Am I right here guys?) I would realy suggest that you take apart that top and re-shoot and re-join the plates so there are no gaps. The only reason I brought up the rosette channel is that if you cut it and than have to take apart, re-shoot and re-join the plates, you no longer have a circle and you won't be able to line it up exactly. Your realy don't want to have any gap at all.
This is from webster's online dictionary.
Main Entry: 1pun
Pronunciation: 'p&n
Function: noun
Etymology: perhaps from Italian puntiglio fine point, quibble -- more at PUNCTILIO
: the usually humorous use of a word in such a way as to suggest two or more of its meanings or the meaning of another word similar in sound Rod True38774.0531712963
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