Your previous post showed 370 hrs TT just over two years ago. That's 300 hrs a year. If that's the current flying rate you'll be at 1600 TT in two years and 1900 TT in three years on the C-17.
That's on the low end of the resumes that I've looked at. IMO I'd be trying to get more squares checked off. Type ratings, upgrade, IP, schools, safety/training experience, 121 job, job fairs, etc, etc.
Regional route might get you 500-700 hrs/year plus 200+ (?) C-17? 1000 hrs a year should be reachable. In two years you could be 3000 hrs TT, 1000 hrs+ C-17, and closing in on 500 hrs TPIC. Year three would be C-17 IP upgrade? 500 hrs+ TPIC?
What's your age? I spoke with a 33 yr old guy recently. Less than 5% of the guys hired ahead of him are younger than him. Airline's been hiring for 3(?) years and he'll retire under 100. AA's OTS averaged 37 hrs old. Under 30 is a very small number.