Hello everyone! So I'm fairly new to the forum so please forgive me if I ask any questions that have been asked a million times already. Anyway, I have a 53 Merc in my 35 ford 5 window and it's been sitting for way too long. I want to get the motor running and I have a general idea of what steps i have to take to do so, but I'm in dire need of some advice.
The break down:
My father used to drive the car but he passed away about 24 years ago and it has been garaged ever since. So far I've rebuilt the carb (stromberg 97) and I drained all the fluids. I had the radiator serviced and bought a new gas tank(Bob Drake) + new fuel line. I also turned the crank bolt to see if the motor was seized and it wasn't thank god. I put new motor oil in and also removed the spark plugs and put mystery marvel oil in the spark plug holes and turned the crank bolt many times to get the oil circulating. After all that was done, the car sat for another few years, and now I'm back at it. In the past few weeks, I've started doing other things to the motor. I bought a mallory distributor + new coil because I'm doing a 12v conversion. I also bought a powergen alternator to go along with the 12v swap. While I was doing the distributor, I figured that I may as well take the heads off to see how everything looked and aside from some carbon build up on the pistons, the motor is all good just need to replace the head gaskets.

Questions:
-Coolant system: I plan on getting new water pumps for the motor, but not sure which brand to get. Also considered adding an overflow, but not sure if it's worth it....if so what type should I get? The stock generator had a fan that bolted onto the front of it, but since I got the powergen alternator, it doesn't fit. There are threads on the front of the powergen (for a fan I'm assuming) but not sure where to get the right fan & fittings to work with the powergen.
-Ignition: I bought new spark plugs and wires, the powergen alternator and coil, and I plan on getting a starter, but not sure which kind to get. was thining about a power xs starter. As I previously stated I purchased a mallory distributor and it's a dual point if I'm not mistaken. Just not sure if that is going to present a problem considering that the original 6v distributor has vacume advance on it. Also not sure if I need anything else to complete the 12v conversion on the ignition system.
-Fuel: This is my biggest problem area I purchased a bob drake gas tank but I don't know what kind of float/sender unit to get. I should mention that my car has a mechanical gas gauge that had a fuel line running into the cabin. I decided to replace it with an electric gauge that came out of the '35 delux model (I think) to eliminate the gas line in the cabin while still retaining the original gauges. Which kind of sender is should I use? Will the bob drake 12v/6v sender work with the stock gauge? I'm also presented with another problem because of the 12v conversion... I purchased runtz voltage reducers from speedway motors, but not sure if that's the right thing to use and I don't want to fry all my gauges. Here's the other problem. Do I go with an electric fuel pump or should I retain the original mechanical fuel pump? From what I understand the stock psi for the fuel is 3psi. So I'd need to buy an inline fuel pump and regulator if I wanted to go with an electric fuel pump. I'd also need a block off for the stock fuel pump on the manifold, but can't seem to find one. Considering all of this, I'm leaning towards installing a mechanical fuel pump to make things easier, but not sure which brand or model to get.

I know this alot of stuff to think about, but I'm a bit overwhelmed...especially considering that I'm not a mechanic. Any advice would be very much appreciated. Any other parts or work that should be done to get the motor running? I forgot to mention....here are a few pics of that electric gauge that I was talking about. Not sure how to wire it up....i'm assuming that one gets a 6v feed from the sender unit and the other is ground. Not sure which one is which and if I am correct about the wiring.