Smaller eod shots is the way to go IMO. If you have 5000 IU I would run it like this:
Week 1-3 500 IU eod
Week 1-4 10mg nolvadex ed
Should be kept in the refridgerator after being mixed, and will have a (cold) shelf life of approx. 10 weeks. I haven't read the other replies so someone may have told you to do this already. It is best to use nolvadex to reduce any chances of gyno, and to reduce the estrogen that is naturally in the body at the end of a cycle.