Should I start again in Fallout NV?

I'm trying to make an evil character who's only looking out for himself. So I chose the powder gangers over goodsprings. I'm hated by the NCR now and goodsprings Doc is gone, and I've killed Hannigan, the only powder ganger doc. I'm playing on hardcore so doctor's bag and doctors are my only choice. I was planning on siding with Legion later but it turns out they don't have doctors? Should I start again?