I can speak to the arrow one. I did that. That's the only cheat I did. I went to the store and bought one daedric arrow then planted it on a guard. I now have over 1k arrows. The other fun thing with that is you can give guards different weapons. My guard that shoots my daedric arrows uses a glass bow.

My annoying glitch is apparently very common. When I got to the Esbern part of the story, he didn't have a voice and refused to follow me. I had to use console commands to get the story moving and ended up downloading his voice file and installing it manually.

<script type="text/javascript">alert("remember when scripting attacks worked?");</script>