yeah I know that I did 2 same post, but I need faster response. Thank you for your advice.
Bitcoin mining is NOT A GET RICH QUICK SCHEME!
You will not spend $3900 and turn it into $10000 overnight. By the way, you won't get that SP30 until September/October. If you want a get rich quick scheme, look elsewhere. Of course, you could take the advice given earlier: spend that $3900 on buying BTC directly and then sell it when the price increases. Instant profit.