The last two spells are unknown to me. What are their parameters and description? I see you put the descriptions at the end of the post.
Still, I also tend to think that custom-designed spells should be created by the magus as a full lab activity, rather than provided as lab texts from some other magus. Even an altered version of a standard spell is still a custom spell.
A season finding a familiar is its own reward. Only exposure experience is gained during that season. Sorry if that wasn't written down somewhere, but that is what was applied to Wolfgang. (I have just added a line in the Post-Gauntlet Advancement Rules.