2.6GHZ 15" Macbook Pro (9.1-mid 2012 non-retina) SSD in Optical bay?

Hi _ I've recently installed a samsung 840 SSD in my MBP hard drive bay.
I am now interested in looking at installing an SSD in the optical bay, But have seen some issues with others unable to use 6G 2.5" SSD's in the bay with decent speeds?
I have purchased a Crucial MX200 250GB 2.5 inch 7mm SSD, and an Ifixit Mac Unibody Laptop Dual Drive Upgrade Kit.

I'm wondering if anyone could let me know if I will have any issues placing this new Crucial SSD in the optical bay enclosure and accessing as an internal ssd with decent speeds?

Thanks for the info, hope someone can fill me in on this! and any issues that might come up!
Thanks,
Meyrick