Critique/suggestions on 273 engine build

Not bashing your plans, add me to the list of previous 273 owners, but I added up your prices on the parts you want to use... they came to almost $2000 on the low end... That's a used low mileage small block or a possible new short block,(read 360). Reuse your heads and intake, save for the B&M flexplate and schumacher mounts. If you're set on the 273, keep the cam at 268-272 duration max. Consider hooker part#5208 headers, they work with pwr steering, have them on my 64 Dart. The horsepower level you want is possible if you spin it hard, but the tq level isn't... Remember torque moves the car..
Doing the rear first is a good idea..

Bob