If I were you I would get a new large external drive that connects directly to your Mac buy either USB or Thunderbolt port and make a second full/complete Time Machine backup to that drive. The reason I say this is because I have heard of problems Re-Connecting and restoring from a Time Capsule Time Machine backups. Seems in some cases, not all, when doing a wipe and clean install of OS X the new install has problems seeing the TM backup on the TC drive.
After the clean install of Maverick, once it comes out, use the Setup Assistant feature that is offered during the initial setup of OS X. With that, IIRC, it gives you the options to restore your programs, settings and files or any combo of those. And you can restore any of those or all of them from a TM backup or another drive.
You might also want to get a new external that is large enough to have 2 partitions. One for a new fresh TM backup and the second for a direct Clone of your internal drive. That way you have 3 ways to restore your data. One with the TC TM backup, one with the locally connected TM backup and one from the clone of your system.
Do not depend on just one backup source to either restore your data to the new OS X or to restore your system back to what it was before you did the wipe of clean install of Maverick.