I would like to try some back-tests for the Vertical Spread RUT/SPY Option strategy with  QuantConnect and met some issues.

Can I import my own data instead of using the data from QuantConnect? 

The reasons are:

1 Quantconnect does not support  index option so far( https://github.com/QuantConnect/Lean/issues/3616).

2 Quantconnect has data for the RUT option(https://www.quantconnect.com/data/tree/option/usa/minute/rut) since 2010, I have the data since 2000.

3 RUT option data from Quantconnect contains no field of "Delta", which is important for my strategy.

Appreciate your help or hint in advance;