Yeah if the regioanls aren't calling, with 1500 hours, go get some turbine time.

You may still need to hit the regionals later but if you can bag some 135 TPIC now that would be a good start. Especially consider operations where you can get ME TPIC, ideally without waiting for many years.

With 135 ME TPIC a legacy call could be within reach (without regional experience), but that would depend on market conditions, which you can evaluate when the time comes.

Alternatively with just SE TPIC, you could then to go to a regional and the combination of ME 121 jet SIC plus the 135 TPIC might well be enough, without waiting for regional upgrade.

SE TPIC has historically only been competitive for legacy jobs if it's in a fighter. Caravan time doesn't usually cut it.