its funny I waited 4 months to realign my dish - it was too cold & snow to do. You are at the exact opposite of the spectrum!
Do it at night. Get yourself a portable halogen light
1. Dont worry about the hole.
2. Yes
3. Use a
C band signal to coarse tune, then Ku signal to fine tune
4. What's your zip code again? (you want to line up with the highest one on your arc, it's just easier)