Going to BSD 8 from RELENG_7

[Bartosz Stec]

Johan Hendriks pisze:
> Be aware that if you go from 7 to 8 you will need to rebuild all your
> installed ports.
> ALso if you do a buildworld from 7 to 8 do not do the make delete-old
> and the make delete-old-libs before you have rebuild your ports.
> If you do the make delete-old and make delete-old-libs runs, all ports
> depending on the FreeBSD 7 libs will not work any more.  << read:  most
> likely all your ports.
> If you have changed for example your Shell for root to a ports based
> shell like bash and you do the make delete-old-libs you can not log in
> anymore, because bash depends on the 7 libs wich are not there anymore.
>
> And as usual MAKE A GOOD BACKUP !!!!
>
> Regards,
> Johan
>
>  
>   
As I remember when I did upgrade from FreBSD 6.4 to 7.0, I ran 
'portupgrade -afi' after thar, BUT as I remember all my ports in fact 
works before they were upgraded. If I understand correctly, the reason 
of this was not making delete-old and delete-old-libs?

So should following upgrade procedure be painless?

0. Backup!
1. cvsup 8.0-stable
2. make buildworld && make buildkernel
3. make installkernel
4. reboot and jump to single user mode
5. make installworld && mergemastger
6. take a deep breath & reboot
7. portupgrade -afi
8. make delete-old && make delete-old-libs
9. reboot
10. Hooray!

My concern is - will my ports works after point 6. ? Quite important 
thing when machine can't be offline by hours during portupgrade -afi ....

-- 
Bartosz Stec