Maximum 4 NFT selected from the desired categories can be minted at once due to the system security. You can repeat this quadr minting at the Private Round if you desired more. Selection 4 NFTs from different categories is possible and also 4 NFTs of the same category is possible for minting. Your wallet should have necessary ethereum to cover the gas fee. For this transaction, it is highly advisable that you reserve an additional ethereum valued of $40 in your wallet against high volatility of the gas fee.