[700rpm]

Replace the gasket that’s leaking, or at least tighten the bolts. It shouldn’t be showing any fuel.
There are multiple ways to check your spark. One is to remove the dist. cap, make sure your points are closed, turn on the key, then hold your primary lead from the coil about 1/4" from a head bolt and open your points. You should get a blue spark from the coil wire to the bolt.

If the engine is properly functioning inside (valves, rings, timing gears)You only need three things to make a Model A run: spark, fuel, and timing.

I suggest you find a local club and attend a meeting. Explain your trouble, and you will be swamped with good advice.
Also put your location above with your name. That will help draw local help.

Good luck. Let us know how it goes.