What would you consider a very durable trapper for Hardcore - assuming no use of tomes and running Elite for 5000 favor?

I am thinking evasion, selfhealing, high trapping skills, immunity to magic missiles and either some source of temp hp or something with extra hp.

Maybe a gnome 1-2 rogue, 2 barb, rest alchemist. Play as Inq most of the way and possibly change to a bombardier once you have 12 alchemist.
INT as main stat, CON as secondary.

Comments and suggestions are most welcome