Should I install my own electrical service panel or hire an electrician?
Jay, your power utility probably has an instruction sheet with specifications for the post, wire sizes, and temp meter enclosure.  In some states you (the home owner) can preassemble the temp service.

Since the temp box only supports plug-ins (extension cords, etc) there aren't any load conductors to inspect.  The power utility has to make the connections after they inspect the service. If you don't use a meter/breaker/recpt preassembled box, you have to make it from components.

The connection from the load side of the meter to the line lugs or the disconnect panel my have to be signed off by a Master Electrician. Check your local codes on that part. 

Be sure all the parts are the proper NEMA type per specs, and don't bury any cables or conduit (but you can lay them in the trench) until utility or building inspector gives you the OK.

I almost forgot to mention, some electricians have temp services all made up that you can rent. Not a bad idea if it is going to be only short term use. You still have to run your service entry cable however.