Custom packages

I have added an extra source for packages, which has patches, and other RPMS that I have added to my build. When I build from this source, I get all the updated kernel packages etc that I expect to get. But, I have a problem in that the installer does not reboot after Disk 1's contents have been installed like when I build off the initial source. Which causes problems with large RPMS not installing due to lack of disk space during the memory version of the install OS. How do I get the installer to reboot as soon as possible? Todd