Installing DSTV is not rocket science, I've been doing my own installations for years. By all means, get yourself the earpice thingy, or the metered version. Personally, I have the meter model only because it was allot cheaper. I would prefer the earpiece though.
Just make sure that the connections points on the LNB are sealed tight with insulation tape, otherwise (as I learned the hard way halfway through a Springbok game!) moisture will build up in the early evening causing you to loose signal completely.
Good luck.