Depends on what you are going to do with the car. Cruiser, spirited street driving, Autocross?
On my '68 I used the stock control arms, Addco 1 1/8" sway bar, KYB gas shocks. I'm running 17" rims with Wilwood disc brakes. If you are contemplating using larger than 15" diameter rims then I suggest running aftermarket control arms. The additional caster will help the car track better on really bad roads with short sidewall tires. On good roads, no issue. (We have some really bad rural roads in NW Indiana) The larger than stock sway bar is a huge improvement over stock.
I drove my '68 with 4 wheel drum brakes for many, many years. Factory discs or aftermarket, switch to discs! Even in fine condition the drum brakes suck. Of all the modifications I made to my car I love the brakes the most. A lot of go is nothing but scary without a lot of stopping power.