Stirring up a hornets nest

Just my 2 cents worth, I have a 66 Cuda with a 225ci and I'm in the process of doing a v-8 conversion now with a 318, 904a and a 8.250 rear and 3.21 gears.
Its your car and just do what feels good to you. If you have a lot of time and extra cash convert to a larger engine. If time is short and you just want to get out there then run what you brung. Honestly - do what you honestly have the time, money and energy for. Don't weight yourself down with huge tasks and cost if you do not have the time to get it done to enjoy it. There are hundred of guys around the world with a car "almost" done for the last 5 years still sitting not being enjoyed because they took on more than they could handle. Enjoy the car and get it out there! They were never made for show pieces "not to be driven". Heck to get 1 hp per cubic inch is pretty good. pump it up to 1.5hp per cubic inch is REALLY good.
Good luck on your journey. keep us posted with pictures. Joe