brasica diplotaxis tenuifolia ( rucola) x nigra ( mustard)

[xdrix]

Hello i have make a croce breeding with rucola and mustard.I would like got a salat with big leaf and more sweet in mouth.my croce breeding is possible?
If is it a sucess, later i will try of hybrided brasica diplotaxis tenuifolia x raphanus sativus. The f2 could have a radish with leaf of rocula?

[xdrix]

[xdrix]

I have take as female parent brasica diplotaxis but i have not got seed.
I will try to integrate raphanus sativus in my crossbreeding.
I hesitate if i create a rucola with a more tall leaf or a rucola the mustarde with a radish root.