I am a fairly new DM I started out with 2 Players that had 2 characters each and the I had more players want to join I let the original players just alt there characters now I have a 7th level barbrain/sorceress a 7th level Rogue/wizard a 7th level sorceress a 7th level cleric and a 7th level monk I am having a lot of trouble balancing encounters because to be able to hit the PC I have to either throw corporeal creatures or a lot of magic that I am not good at because I have never played that type of character myself. I have also it appears to have made the same mistake a lot of new DMS make and have given to much magic to the party they all have +3 armor and +3 weapons spell resistance and at least one type of elemental resistance of 10 I do not know if I can savage this current campaign but any advise is welcome