Isabel brahma x light or buff brahma

I am planning to buy an Isabel Brahma but I can only afford one at the moment. Should I get the Hen or the Rooster? I have Light and Buff brahmas and I intend to breed them with an isabel until I can get my hands on another one so I can get pure chicks.

Light Brahma pullets BackYard Chickens - Learn How to Raise Chickens

Buff Laced Brahma, Page 10

Brahma chick with some very long wing feathers

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Buff Laced Brahma, Page 11

Isabel Brahmas? BackYard Chickens - Learn How to Raise Chickens

Light Brahma pullets BackYard Chickens - Learn How to Raise Chickens

Buff Brahma-Possible stunted growth?

Buff Laced Brahma, Page 10

my light Brahma, BOK BackYard Chickens - Learn How to Raise Chickens

Brahma colors BackYard Chickens - Learn How to Raise Chickens

Light Brahma pullets BackYard Chickens - Learn How to Raise Chickens

Light Brahma roo x buff Brahama hens = what color chicks