New Merge Dragons offers of 2500 Dragon power in 60 days...possible

Does CashinStyle AyeT pay out? Want to do Merge Dragons again, on my new phone. ~£30 for 750 dragon power...and ~£80 for 2500... remember doing the 600 dragon power it needed about 3 Magic Gems at 25k each.

Is this technically possible if I just keep farming the top tier magic gem which are 25k each, and instead of the Crimson eggs as they are like 700 each at that point of 700 dragon power, start on some other eggs? Does campaign give much after stage 10? The site states 60 days but not sure how to get the extra dragon power after the 6-700 to get to 2500.