I think you misunderstand my point. My point was: If you have to replace everything why not leave the existing repeater up and add all the new hardware as well :) There is no need to take down the 2m unless the location is severely power or space constrained, which is not really the case for most of the high sites I've seen.

Replacing it only makes sense if you could reuse some hardware so you have to choose one or the other (or to invest in buying new). But in this case it will be 100% new so that discussion doesn't come up.