BMR, TDEE, BMI: Creating a Diet to GAIN 10!

 I was told to try a website, http://www.1percentedge.com/ifcalc/, to determine how to create my diet plan for bulking. Here are the results of my body composition calculator:

Notice, the site gave me a goal. To gain 10 lbs in 70 days, working out 5 times a week, I must eat 3473 in week 1 on a rest day and 3788 on a workout day! This is a great measurement, but if anyone out there has something a bit more accurate or some comments on the accuracy of this site, I am treading in unfamiliar waters here! Any help would be much obliged, folks!