Ok but then our Parma Magica summa should be at most lvl 5.
I think we should have Finesse, Penetration and Concentration as lvl 6 summa as this ability work for all our mages similar well. (Especial Finesse and Concentration help us with our educated grog as well to let them use our magic items)
The lvl 8 Magic Theory is fine but then we probably should have at last one tractatus on Holy Magic.
Our problem with the table Trogodor put up start at latest when we want to pick books like The Bible or common Artes Liberales/Philosophiae books given in A&A as they not fit in. From a previous post:
Edit: the suggested books here are 7 BP short of 3x 35 BP so if we find a better Artes Liberales book and maybe have the Philosophiae book quality improved by 1-2 points it can fit in. Maybe both books where commented by a past magus and so the Artes Liberales have a Ql of 13 and the Philosophiae book have Ql 14.
In general I'm no fan of the lvl 6 Ql 17 books instead they should be just lvl 6 Ql 15 (the only reason I can think why someone want to pay for the 2 Ql more is because of book learner as 105 / 15 = exact 7 season and 105 / 17 = ~6.2 season)