If you bought the full pack you are allowed to sell you game commercially.
No need to give recognition on the art. Just make an awesome game. Also, leave a link to your game on steam as soon as its out. Really would love to see it
Your a G. Hopefully will be ready sometime in April. I don't have an artistic bone in my body, but love the programming side of things. I love when artists and programmers team up to make a great project. I'll send you a link when it's done!