What would make the cleanest Nuclear Spider?

Considering my current stock what would be my best route to go to get the cleanest Nuclear Spider?

My 0.1 Spider is very stunning in my eyes and I would like to use her down the road for this project, but I also have a very fine 0.1 Butter hatchling.

I was thinking that a 1.0 Fire x Spider would be a nice match with my Butter, but I really like my 0.1 Spider so I would need a 1.0 Fire x Butter.

What would any of you recommend for this future project considering my current stock?

This is easy sweet.

Get your hands on the cleanest Fire boy you can. Breed him to your special spider girl, and if you are fortunate enough to get a really sweet fire spider boy, then you breed him to your little butter.

Then you just hope like crazy the odds are in your favor and you hit the Nuclear. I'll be trying for it myself in two seasons probably. I'm not real big on spider's, but that Nuclear is something else.

Gale