I am new on this forum and I own a Rover P2 Sport, 12Hp. The plan is to, with (quite) a bit of help

The car is not in driving condition at the moment and I know it's going to take time to achieve this. I am not the most experienced car mechanic either, but my friend and mechanic Dave will help me to get there hopefully.
We will first attempt to start the engine in a few days, to see if it will come to life. If this works out, we will then start with work on the car. We have done some work in preparation for this such as, stripped and cleaned the carburettor, air filter and distributor and bought a new set of spark plugs. It all looks good so far and I hope we will manage to start the engine.
I would also like to buy a new set of HT leads, so if anyone can suggest where to buy them, that would be great.
I have just recently started to research about these cars and I have bought the manual from RSR. If the restoration goes ahead, I will also become a club member.
Looking forward to it and I will appreciate any advice I can get as the project goes on as I will certainly need it, especially when it comes to sourcing the right parts.
Thank you.
Deni