Received my parts order and assembled my bike this evening...
SRAM Rival shifters and front derailleur, SRAM 890 chain, SRAM 850 12-23 tooth 8 speed cassette, Shimano 105 5500 rear derailleur, Shimano R700 crankset with 1.2mm spacers between the small ring and the spider with Jagwire Inline J2 inline adjusters...
Initially, it shifted like crap but after applying a bit of oil on the cables where they entered the housing and some patience on my part with the limit screws and the barrel adjusters, I was able to get the system dialed in pretty well...The biggest issue right now is some front derailleur rub in the more extreme gear combos...I suspect that if I remove the chainring spacers and give the front derailleur a bit more TLC, I can have it shifting as well as any other system out there...
I'm not all that into the new style Jagwire inline adjusters....They look nice but they're not as easy to use as the old ones...