One of the things that I found when I first started brewing Kombucha was that I never had enough of it! If you typically brew in a one gallon jar, like most kits, once you set aside your scoby and 1-2 cups of brewed kombucha for the next batch, you will only have about 5-7 bottles (depending on the size). I secondary ferment in 16oz bottles, so I only get about 5 bottles and a little extra that I usually just drink right away. Depending on your tea and temperature, it takes 7-14 days until you have a new batch to bottle. I drink one of the 16oz a day, which means I have a 5 day supply, if I hoard it and don't let anyone else have any. So, my point is, you will never probably have too much. If you have too much, you can put your scoby in stasis by not making any. The batch will turn to kombucha vinegar, but you can remove the scoby and a small amount of the liquid and start again when you are ready. Do not pasteurize it, unless you don't care about the live yeast and bacteria that give you the health benefits.
ps. I make 4 batches at a time now!