Reader Question: 1x9 dual bash guard setup

Does anyone have an answer to this +1lap reader's question?

Hello. First off let me say I really like your website. Now I have a question. I have a stock Truvativ Touro 50/36 compact crankset with a 68x108mm BB and a 45.5mm chain line (?). And a 12-26T 9-speed cassette. I'm leaning towards a 40T chainring.

I'm trying to get the straightest chain line for this setup. Should I get a 68x107mm and run the chain ring on the outside (I'm adding 2 bash guards) or get the 68x113mm and run the chain ring on the inside?

Also, assuming I'll need chain ring bolts for a triple crankset, what size spacers? I'll be getting 2 42T BBG Super lights. Do people normally get bash guards 2T bigger? Obviously this is all new to me. I bought a 54cm Moto' Fantom CX for my introduction to cyclo-cross. Thanks for your time and expertise.

Lightweight Cross Bike: Brandon's Salsa

This is my 44cm 2008 Salsa Chili Con Crosso custom cross build. I attempted to build the lightest possible bike that my budget would allow. Many parts I had previously on my Ridley and just swapped them over to this cross project. Once the bike was complete the project weighed in at 16.36 pounds. I could take some weight off, putting this bike into the 15-pound weight class by switching out the Shimano Ultegra Cranks and changing the ZIPP clinchers to a tubular set.

Cross Bike Setup:

Salsa Chili Con Crosso Frame Set		$1,350
Cane Creek 110 Headset		$162
Campagnolo Record Derailleur		$550
Campagnolo Record Right Brake/Shift Lever		$290
Campagnolo Record 10 Speed Cassette		$550
Salsa Titanium Skewers		$76
Salsa Seat Clamp		$20
Ritchey WCS Handlebar		$90
Ritchey WCS 4-Axis Stem		$98
Shimano Left Brake R400 Lever		$44
Campagnolo Record 10 Speed Chain		$90
TRP Eurox Carbon Cantilever Brakes		300
ZIPP 404 Clinchers		$2,098
Fizi:k Arione Saddle		$140
USE Alien Carbon Seat Post		$160
Kenda Small Block 8 Tires		$88
Handle Bar Tap		$15
Shimano Ultegra Cranks		$240
Shimano BB		$55
Crank Brothers Candy SL		$120
FSA Cyclocross Carbon Fiber Chainguard		$95
3rd Eye Chain Watcher Chain Deflector		$10
Cables and Housing		$20

Total: $6,661.00

Special thanks to the guys at NRC in Kyle, Texas for helping me get the project race ready!

Thanks,
Brandon