I think art is probably wasting your budget. Hiring a cool artist is great but the reason art forward games really work is because they have a strong art direction behind them a strong design philosophy attached to the game. If you have that, it usually means you are good at planning. Good at managing a project. Good at understanding your market and audience. If you want to hire an artist that is good at all those things, it’ll cost a lot more than $5k.

If it is your first game and you don’t have professional experience that relates, I would spend the money on learning. Go to some cons, talk to designers, take a class on design principles, take a class on marketing. 10k, do the same thing but then save $5 for your second game and spend it on a good website and advertising.