What are your reasons for setting up log shipping? Purely for DR or for off loading reporting? If you are thinking of running reporting even off the secondary know that it is still a pain in the arse. I've found it easier to just do a nightly restore of a nightly full backup (added advantage of testing every nightly full backup!). If this doesn't meet your reporting requirements and you need more realtime, i still think there are better ways then standby LS secondarys.