I think we are onto a more interesting conversation now that might actually have impact and that hasn't already been discussed and decided on relating to three characters - so spoilering the response.
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On 2 we handwave the rule for familiars.
On 3 we handwave the rule on targets.
They are both one rule being ignored they are just seperate rules.
Seperately we don't need to handwave any rule for caster level 21 multiple options have been provided for that - seperately we don't need to have a caster level of 21 as multiple options have been provided for that (some I dislike but they have been provided).