318 runs real load and shakes like crazy

The most important step right now is get get your ballpark initial timing. I know you did you established TDC to get your firing order but with no Notch visible on the balance you really have no idea where you are. On mine I set TDC to 0* and used yellow paint to draw a solid line from one side to the other of the harmonic balancer. Luckily on mine, my line hadn't shifted and 0* lined up with TDC so I made a short yellow line at 5* then a longer line at 10* then short at 15* etc and I repeated until roughly 40* It's a tedious process but the more care you take here, the easier it'll be later on down the line to set initial timing and also figure out a rough distributor curve if you decide to go that far.
Every engine is very different and will need its own initial timing, but typically if your engine is stock, initial timing should fall in the range of 5*-15* (I am not an expert and you might be a little out of this range depending on how your distributor is set up) You can usually start at about 10-12* and decide how the engine runs then move it up or down from there. My personal engine likes to be in the 12-14* ish range of initial. (Reminder to always check initial timing with the vacuum advance on the distributor disconnected, and the line plugged)
Once you set that you need to look everywhere for vacuum leaks because it looks to me like you are either way out of timing or have a significant vacuum leak, or both.
Good luck!