Is Tattoo Excision for Me? (Photo)

I've had my second laser tattoo removal treatment of a 10 cm^2 (5 cm long x 2 cm wide) tattoo on my chest. Laser treatments resulted in bad scarring, including a keloid (I'm Asian). Laser is not going to work. Apart from the fact that I have proven to have a tendency to develop keloidal scarring, are there any other factors that would complicate tattoo excision? Is there anything at all that would prevent or complicate surgical excision? Is there any reason I shouldn't go through with excision?