Breeding Mojave

I would go with a lemon blast or if you could find a spinnerblast in your range.
That would fit well.
I wouldn't do the enchi lesser, it wouldn't add anything except a white snake.
You would be taking out the reason you used enchi, to clean up pattern.
I love a white snake but in this case, I wouldn't recommend it.

If you are looking for an adult , 2 gene female for under $1,000, I think you'll find your options limited. A Lemon Blast, a Pastel Yellowbelly, a Pastave (Pastel Mojave), and a Pastel Lesser may all be options. However, I wouldn't go for a 2 gene female with another BEL gene (other than Mystic/Phantom, but a 2 gene combination with either of those genes will probably be too expensive). Your options might get a lot better with a budget in the $1,200-$1,500 range.