I know some will disagree but honestly man ANY fairly high end store bought indoor mix will work good as long as it drains good. Add some extra perlite to improve drainage and get better air to the roots. Like maybe 20-30 pct. Sometimes when your beginning, its better to not try and create your own special mix. Too much can go wrong like too much peat lowering the PH or too much organic fert / N burning the plants, etc. Use a copmplete feed after a couple weeks. Start with 1/2 dose.