OCC
Have you looked at CB Performance Builders Choice engine kits? They supply pretty much everything you need in one kit for a long block and you assemble it. They don't include carbs or exhaust. They have a 180 hp kit for just under $5K. A hpmx 44 carb kit would cost another $500 or so. When you are done sell your 1915 long block.
Another option would be to look at buying a long block already assembled. John at Aircoolednet has some great deals. His 2276 long block is $4,795 and he will build it mild or wild to your choice.