Hey Simon, most of us had these same questions, and Petko is always giving the answer, so now I will save him some work :)
Regarding the data, why don’t you look for another boker with more bars? I remember Jacpin shared a broker that provided 5 years of data, and she was happy with the data. I forgot the name. The other option is to use the MetaTrader-Demo data that is by default in MT. This data is very accurate. I see that Petko uses it in many videos.
Normally I use my laptop and desktop to do the generation and the actual trading. I do not use VPS. A VPS is an extra cost that you need to pay – about $15 per month minimum. I do not think that one computer or a laptop will be such an expense in electricity.
If you have a laptop just leave it running overnight. There is no problem with that.
Regards,