Looking for more

I think you are just about to the weight of the bar you have to add... So you need to decide how serious you want to be - because you really need a weight loss program that's going to do more than peanuts, and to invest in the chassis tuning. I still think you'll need another 50-60hp to get there unless you get seriously into plastic body parts.
I plan on installing a solid roller cam and raise my compression by about 1 point with a head gasket change. switching to a single plane manifold and 800 holley and I think I have those horsepower. I am also going to cut and box the k-frame and add a motor plate. I think I'll be pretty close in the spring. I will also be getting a glass deck lid, glass bumpers, glass rear bumper brackets and I'm trying to figure out a light weight front bumper bracket.