Iqfeed eod backtest

I've read through multiple past posts on this topic but am unsure of the answer.

I am trying to perform a backtest using iqfeed eod ohlc data, after hours on a watch list such as sp1500. Am I limited to the basic package 500 streaming symbol limit for an eod backtest, unless i upgrade iqfeed?

Since this is a once daily backtest which could use 15min delayed data, does the symbol limit still apply?

Thanks in advance,