Simple platform

I want a simple platform for investors, that has   two panels: an admin panel from which an administrator registers people with all their data and amount invested, which calculates in real time the dollar pair - btc, and has visual of the total investor, amount invested, investment plan chosen, that has Functions to calculate interest, calendar that reflects the dates of payments to be made, function to edit or delete an investor. And a panel for users (investors), in which they see their investment payment dates, and on each payment date he can choose between charging, reinvesting that amount or charging it in us $ or BTC (these functions would be with php function mail with a structure each email that tells the administrator that you want to charge your payment date, or want to reinvest, or want to charge in btc) And any other functions or widgets that the developer wants to add. all files and DB include