Want to roll out of Pconc 30 div budget

Getting tired of Pconc pathfinder I don't want to run campaign again. Looking to get into T17 Strongboxes and more toucher strats in general. I just been running alch and go up to this point.

I've been thinking Mamba but have not heard great things about it this league with its clear. Any suggestions? Preferably with a detailed POB that explains the gearing as I am a noob that needs to be hand held