The meconium does wash out, and you could use a disposable liner y=until it's cleared, which makes it easier to deal with.
A 2 part system is the best for dealing with BF poosplosions - it's much more effect than pocket or all in one nappies. I've found that 50cm bamboo terry squares are by far the best nappies for the first few months. Folding them isn't rocket science, and only takes a couple of minutes practise to have it cracked. Here's a video
The other great things abut terry squares is that they wash superbly, dry quickly and will always fit well. If you get 50 cm ones, they won't fit as nappies much past 6 months, but after that you can use the as boosters and inserts, as we'll of loads of other uses, so they are never wasted. And they are STILL the most efficient nappies on the market. You don't need to soak or in any more though - just wash like any other nappies.