67 Barracuda- Brakes and suspension on a 5000 budget- advice needed

I have 5000.00 to upgrade the brakes and suspension on my 67 Barracuda FB. The car will be driven daily, or at least a few times a week, exclusively on the street. I won’t be doing any kind of racing, but there is a lot of aggressive traffic around here, and the car needs to perform well in those situations.

My goal is to get the car handling and steering more like a modern car and braking strong enough to handle the 340 4-speed, 8 3/4 swap next year (and perhaps an even more powerful engine in the future.)

I’ll be running 15x7 cop wheels with 215 60 or 65 tires in the front and 225s in the back. It's hot here much of the year, so I'll run a good set of summer radials.

I want to do a front disc swap, rebuild the rear drums, and replace the all the brake lines in addition to suspension work.

What I have to start with:
-The original 273 / 904 and 7 1/4 rear
-All original suspension components
-Power steering was replaced with a fast ratio manual box from PST with a Moog pitman arm
-Front and rear manual drums (I plan on staying manual)
-No sway bars

I already have:
-All the parts to do the rear brakes, including the rear axle brake line and parking brake cable
- A set of LCA’s with the early sway bar tabs.

Not including the price of the wheels and labor, what’s the best bang for my buck on this budget?

Are things like tubular upper arms and adjustable strut rods necessary for what I’m doing, or can I get a good alignment with offset bushings alone? I imagine those things would kill my budget quickly.

Thanks in advance for your input