For now, don't bother with an IR. I'd even bench the idea of getting your CPL for the time being.
The offshore aviation world is in a total free-fall along with the prices of oil. I've only been flying offshore for 6 years and even then, close to 1/2 of all the offshore pilots I know have been laid off... myself included. Hell, I got laid off twice in 6 months by the same damned company lol. If I can't find an offshore job right now... you're not going to either.
Onshore IR work will be getting flooded with hundreds of offshore pilots ready and willing to start tomorrow. So again.... you're last in line.