If you make it pay to win, the game will die quickly; gone before a proper community manages to set foot. If this game is to last, you need a large community willing to spend money on cosmetics and fair boosts in progression. Don't be ashamed to ask for donations too. People love Durango and, as long as this game is similar in quality, there will be plenty of people willing to support your game. Try your best to deliver and we'll try our best to support you!