Making The Very Big Fin HMPK

I fallen in love in the very big fin hmpk betta. I think it's balance, good shape and more good looking than halfmoon...can't imagine? , well see the picture below :

This is very stunning to me. I think to make this form of betta I have to breed hmpk with halfmoon at F1...then select the best pair from F1 to inbreed and waiting for the result of F2...

Then I think at F2 , I may have some luck for the very big fin hmpk...if I still can't get it, I will do F3 by select the best pair from F2...together with select another bloodline hmpk male to matching with F2 female...

Finally, I hope I can get the perfect form big fin hmpk :)