Hi Snert,
For your bacon and dry cured meats, this calculator allows you to set the level of nitrite and will calculate it for you. Although it says it's for bacon, it can be used for any dry cure.
http://www.localfoodheroes.co.uk/calcul ... ure_bacon/If you're curing an air dried ham in the style of parma, the nitrate isn't essential, it can be made without and is in Italy. It sure helps to give reassurance when you don't have their climate though. Although not exactly traditional, I'd still add nitrite. After that it's good hygiene, drying temperature etc.
I hope this helps, at least with one of the issues.
Phil