From what you want (thickness / darkness / midzzzz / singing leads / output), your music style (Blues Rock) AND your guitar, I would second the Crawler option.
The CR neck like the AB neck is an Alnico IV magnet. Here is what Tim said here about those ones :
«Abraxas and Crawlers are very similar : fat, warm and singing. The Abraxas neck is just a little sweeter, the Crawler neck sounded slightly tougher/more aggressive. the Crawler is a little hotter than Abraxas although both are AIV powered. The Crawler neck takes the neck Mule tone to a much hotter level-DC7.6K Alnico IV. » 8) 8) 8)
Then, regarding the bridge, the CR (DC15.6K) will please you in terms of power / output, for some ultimate blues rock tones... Hands down.
PDT_003