Your pair are very pretty, however, I would not breed a VT. Like everyone else has stated, they are not as wanted since they are so easily found at pet stores.
Just a suggestion, you could do like I did and order a breeding pair from Soley927 on Aquabid.com
The ones I bought from him are not perfect but I think they are VERY pretty. The most popular, and most wanted Betta right now seems to be the HMPK. I bought two breeding pairs from him. My blue green pair was $15 and he gave me a slightly defected pair for $5. Priority shipping was used since the temp in my area was fairly warm. He is located in the U.S. like me, so I was able to avoid the transhipping fees. In all I only paid $30 for 4 quality fish including shipping.
There are also many other sellers on Aquabid who are amazing!
You will be so much happier with your results if you can just invest a little more in the beginning when buying the fish.
Looks like Soley doesn't have much left that is good, but last I heard he has some Superblacks in his grow out tank (If I remember correctly). But for now, Fishlover007 has some cool looking fish! (Never bought any from there but they are pretty and located in the U.S.
Good luck! :)