The issue is this is all getting done for a Chameleon and we have 7 days of downtime at the moment. He is also the skill monkey for EVERYTHING which ontop of the Chameleon itself means that his skills are spread beyond thin. Spellcraft is only at 4 Ranks with +3 from IntMod. The books in question also all contain level 6+ spells.
Well I'm sorry we weren't looking for zebras.
That is not explicit at all, the way the SRD reads it would be that ANY prepared arcane caster (that uses a spellbook) still has to have the individual spell recorded in their own version. I *do* have ALL arcane class spell lists which means that basically everything is ON some list that I can then access it by, as well as getting them at lowest level possible, I still have to worry about it being in my version of the language. This means I still have to worry about actually getting copies
At this point the DM is using what seems to be the RAI of you can use any copy of the spell with the normal spellcraft DC, not just ones you have copied). So now it is not so much of an issue I can buy spellbook copies of spells loose leaf to put into any spellbook then just make a Spellcraft roll I can't fail.
If your DM is going by this, then why are you continuing to talk about the RAW in this thread? You have your answer: borrow/steal a spellbook and prepare spells from it. With Arcane Focus, your Spellcraft check is at +9, so you can take 10 to prepare any spell from any book level 4 or lower. Since you *only* have 4 ranks in Spellcraft, I assume you're not a very high-level Chameleon, so for now that should be perfectly adequate.
On the other hand, if you want a RAW answer to the question, then switch to Divine Focus and plane shift to a plane with dramatically accelerated time flow. You can easily get months to master spellbooks for each day of downtime you have.