Hello,
I was planning to do that last year but realized it was useless:
1. First, you never know if the data they sell you is correct and it will be hard for you to compare it
2. The best thing is to generate EAs or backtest strategies over the Historical data of the broker you use.
If you buy data from one place and move your live account there because you just bought the data from there is really pointless
3. I would suggest you select 2-3 huge brokers with FCA regulation, low spreads and leave their MT to collect data for you. It is not really that long time you need to wait. Use this time to practice with EA Studio. At the meantime, you can use the MetaTrader – Demo data that comes with EA Studio. It is good data from JFD broker.