A question regarding a second account, coins and gold

Hi,

want to create a seccond account, donate some money to skip the queue and use it for more efficent leveling (not multiboxing, just alt-tabbing). But I have some questions regarding this:

I intend to spend the coins I get, for buying stuff ingame for my main account. The question i have is, if its okay to use the coins on a second account, to buy gold on the Trade Service and trade this gold ingame to my main account, or if I should use the coins I intend on buying and transfer them via coin gifting to my main account? Sorry if this is a stupid question but I don't want to risk getting banned, and I thought i could ask this question beforehand in the Forum.

It's allowed and you will not be banned.