Need Help And Advice For The Next Step!

[13 GT/CS]

My current Setup on my 2013 Automatic is a Vortech JT Trim, Boss Manifold, complete exhaust, complete BMR Suspension, and my dyno numbers were 628hp and 510tq. Of course I want to raise those numbers but what steps should I take? Don't want to blow anything up but not really sure how I should go about it. Its a daily driver as of now but will be a drag racing focused car in the future. Should it be, fuel system, torque converter, oil pump gears, looking into an entire shortblock setup, just pistons rods etc, build up the transmission. If shortblocks is the answer who should I go to? It seems like every company has their own. Im semi new to this so any advice or help is appreciated. Thanks!