However, that is 49 blocks, and maybe you don't want to make that many. Six rows by six, or 36 squares, with three inch sashes and a three inch sashed border would give you more than enough for your queen size comforter, 93 X 93.
5.) Whether or not the character(s) are good to play as is irrelevant. I have come to the assumption that the strongest characters are Super Sayain 4 Goku, Vegeta, and Gogeta, Omega, Nuova, and Eis Shenron, Super Saiyan God Goku, Whis, Beerus, and Super 17.
Nazo in his base form is stronger than super shadow, in his perfect form (all he needs is the 7 chaos emeralds) he is way stronger than HYPER form! If Nazo is really as strong as you say he is, then he's literally the most powerful character that has ever interacted with anyone from any Sonic universe ever.