Micro ATX Mobo + CPX PSU in modified Antec 300

I would a few opinions on the possibilities of slightly modifying a few of the expansion bays in the Antec 300 to accommodate their CPX psu. It seems to me I would have enough room with the ASUS Micro ATX Mobo, however I would like some opinions on this idea.

http://www.newegg.com/Product/Prod [...] 6813131371
ASUS Rampage II GENE LGA 1366 Intel X58 Micro ATX Intel Motherboard - Retail

http://www.newegg.com/Product/Prod [...] 6817371024
Antec CP-850 850W Continuous Power CPX SLI Certified CrossFire Ready 80 PLUS Certified Modular Active PFC "compatible with Core i7" Power Supply - Retail

http://www.newegg.com/Product/Prod [...] 6811129042
Antec Three Hundred Black Steel ATX Mid Tower Computer Case - Retail

What do you think?

Thanks

unless the psu was a gift from your Aunt , and she just died so you'd feel guilty if you didnt use it ....

why would you bother?

nothing wrong with ATX