You must start PCT two weeks after last injection. Stay on 10mg ED of nolva throughout your cycle then bump it to 20 during PCT. You can start clomid too the same time you start PCT with the nolva. Either take it 300/100/50 like the norm or you can use pheedno's PCT routine for clomid, either way you can't go wrong. And if you feel your body reacts great to 250mg/week then stick with that, you know your body the best. Good luck bro.