I use the cents account so I can get a high equity, I just have to spend $ 10 then there are 1000 in my account equity, this is great for learning if it has not been going directly to a real account,
I think if you have any questions how much funding was reasonable, then you ask yourself, how much money you will get per day? for me the target of 5% from the available balance is a rational target, so stay you count, if you want money $ 5 per day then you should prepare to spend $ 100