Switch from test cyp to enanthate first cycle

Switch from test cypionate to test enanthate. I'm running my first cycle test cyp with 10 week test cyp 400 mg at week. I have cyp 200 mg / ml. With adex 0:25 eod. I'm in week 7, I had good gains and no sides. I would run cycle for another 4/5 weeks, I got the test enanthate 300 mg / ml. I go to 600 mg per week? Or use 0.8 ml 2 x week? It is a good idea to run the first cycle at 15 weeks?I decided to increase cycle length for more gains and because I got now hcg. Hcg start from week 8 to week 16 until pct standard nolva clomid

Run 12 weeks at the same dose.