You'll be fine. I tend to use a +dex or strength amulet beyond that point anyway.
If there's something I can't recall, and you need it to talk to some dragon, just insert the dragon heart using the command:
insert ItAt_IceDragonHeart
In order to do open the console, you need to active test mode though, which is done by changing the gothic.ini file value "testmode=0" to "testmode=1", and then you can open it with F2 or some such thing.