Honda did not intend to put race engines in all of their vehicles. They designed engines that would last 100-200,000 miles, sip gas, and that was it. When you start modify an engine, you are taking away from the life of the engine. Have you ever heard this little saying"

R-uins
P-eoples
M-otors

Will the engine handle 10,000rpm??? Probably, but not for 100,000 miles.

Raising your redline is not something you should do unless you take the correct steps to "re-inforce" your engine. (larger rod bolts, block brace, dual valve springs, Ti retainers, etc)

Does this help you any?