Programming a trading platform

Hi, and welcome to the forum.

That's almost an impossible question to answer. It mostly depends of course on how quickly you can learn the various techniques.

I'm assuming that you will be performing all the functionality manually. Normally of course the solution would probably involve a fair amount of VBA (Macro) coding, but you need to walk first.

As a minimum you will need to design database tables and validations in cells, and be comfortable with using standard VLOOKUP functions.

The first thing to do is write down at a reasonably high level, the processes you want to undertake, and the data manipulation techniques, and functions you need to accomplish the task. When you completely understand conceptually how all the bits hang together, that's the time to start putting things together.

HTH