Decline Rate for New Horizontal Wells


I have a new 5 well pad located T1N BLK 34 SEC 11 A-388 I havent recvd my 1st check yet but I know it will be soon as 1st sales were 4/13. This is my 1st rodeo so to speak & this forum has been my life line for info and education Thank you!! In trying to figure out how long this income will last & to what degree I am LOST!!! I understand it’s a guessing game but how can you make any financial plans? Is there a typical decline rate? Will it even be worth it in a year? Are these wells normally profitable for a few years?