The fact that it found a trojan right after I did the initial scan that found nine objects was a little weird and worrisome for me..... Can I re-install AVG now?
Yes, go ahead.
Just to make sure, this is all I have left to do?
Yes, if there are no current issues.
I did step 1 a couple of weeks when you first posted it. It didn't produce a report, should I re-do that?
That won't be necessary.
A friend found "LchDrvKey" on my startup items and understand this may or may not be malicious, is there anything you'd recommed I do to find out? I scanned it with MalwareBytes and no infection was detected.
Upload the file here for security check: https://www.virustotal.com/
No infection found
You're good to go.