That's a good route. You can also hop in the Klassic Tower for character specific endings. The Towers of Time are really unbalanced until the patch comes. Some are a cakewalk with decent rewards, some are brutally unfair and not fun. I would log in every once in awhile in case the rewards for a tower are what you're after...if they aren't, just wait until they balance it more. For the Krypt, if you've stockpiled coins, no harm in opening some chests in there. I just wouldn't worry about grinding the currencies until the patch drops.
Thanks for the tips!