Seems pretty good but maybe you should put in the IAL papers C12 and C34 ones in aswell as they are longer so more like the actual paper you will sit. I dont really know about the delphis papers but you have got a load already listed so if you are running out of time I wouldn't worry about not really doing these. The C2 papers for the old spec arent bad or anything so I'd do a few of those aswell, if you cba to do them all you could just do the gold papers which i think just group up the harder questions from different years.
also Madasmaths papers I would do before the actual new papers as they are sometimes a bit weird, i rememer the stats and mechanics ones especiallly like they are rly good practise but not exactly what you should expect for the real things.
There are quite a few of the madasmaths papers and also crash maths make their own aswell so there is quite a lot of material specific for new spec so dont think you will run out of them extremely quickly. Edexel also made a load of practise papers for the new a level which your teachers will give to you later on
Also i remember M2 papers not being amazing they had a load of stuff we hadnt covered, maybe i just looked at it too early and didn't look at them again after learning everything but i didnt do any. I did go through questions by topic of P&MT on the M2 stuff i think to look at some harder questions but that was it rly, i found the textbook and everything else gave enough practise for the mechanics but obviously do what you want. If you have anymore questions I am happy to answer.