Ouh, nice! I’m currently trying to get solo working for me as well but only with a single character. Mostly because I only have time for short sessions in unconventional times of the day. ^^’ I’m always interested in others experiences. I haven’t read through all available sessions yet but I will come back for the rest later.
Rules wise I noticed a few stats helping skills (stats may only help stats, skills may help stats and skills p.36) and personally I would try to be a bit more specific when it comes to failures of tests that where taken “carefully”. I’m not sure if the careful steel test is kosher. 
If you want to get more oompf out of your enchanter I recommend this post by Luke. As a jeweler you will think twice before accepting to be part of “an experiment with your nimble trait”. diabolic laughter
I’ll try to keep up!