Don't be afraid to charge, people that get the game for free can be considered "rewarded" for being the first ones to trying your game, so is fair that they got it for free.
That was always the plan, to get feedback early in the development process and then gradually increase the price until it's feature-complete. It even says so on the landing page. It's was just the timing I had a problem with. It's been less than a week and I feel like itch, the website has been constantly trying to hurry the process along while itch, the community has been collectively dragging its feet.
Game + Soundtrack
Can't do a soundtrack, it's not my music to give. ( Again, it says this on the page you're critiquing. :P ) I figured I'd start doing this by bundling my own games once I get more than one made. Maybe I could do an HD/SD thing. I dunno.