I have done both, completely restored car(s) for fine point as well as purchasing an older restoration Model A. You can be dollars ahead if you purchase a restored Model A. If I was in the market for another Model A, I would consider two currently on the MAFCA website for sale. There is a 1930 Tudor with 46,000 miles and a known history from new, rebuilt engine, older repaint. By the picture, it is a solid, straightforward car at $12,900. The other is the original '29 Fordor for $15,500.
Unless you are looking for the hobby of doing your own restoration, and have the knowledge, tools, space, time, and money to sink into it, go for an older restoration, especially one from the 70's. That's what I did with my '29 OCPU. I knew the person that restored it in 1969 and remembered the truck. It took me about 30 seconds to make the decision to buy it and I haven't regretted it a bit.