Series 9 theory

This is my series 9 theory on the search for gallifrey the doctor links himself to the timeline of the daleks and travels back in time across there personal history and meets a young davros on skaro eventually,then events happen involving davros and missy gets involved somehow.it turns out that the doctor is encouraged by Clara to change history in an event with davros being wiped out and therefore the daleks never existing,but of course claras being used by missy for this purpose.missy herself has an employer,because gallifregs been lost in another universe,an anti matter universe with omega in control and with the timeline of the daleks and davros changed thanks to Clara gallifrey can be released and with it omega will be free

This may not make sense its just my theory though. Not sure how Pompeii will come into it yet.

Sorry about spelling and punctation,I'm using a phone that's not very good at the moment