I've already had a few words to say on the subject in this thread here:
http://www.iceinspace.com.au/forum/s...ad.php?t=23060
But if the money is not an issue and you want the satisfaction of building a scope then go for it.
However mirrors are reasonably cheap and easy to get hold of these days (eg around $200 for an 8") and the quality isn't that bad so you might want to skip the messy grinding bit and jump to the putting the nuts and bolts together bit which is just as much fun in my opinion.