Rebuild Distributions After an Upgrade - Best Prac

I'm performing in-place upgrades from 11.50 and 11.70 to 12.10 and I am interested in the best way to drop and recreate distributions to minimize impact. Would this be the most reasonable approach? for each table: update statistics for table <table> drop distributions only; update statistics medium for table <table> distributions only; -- to quicklyput SOME reasonable distributions in place -- do my normal update statistics from Art's dostats update statistics low for table <table> (<columns>); update statistics high for table <table> (<columns>) distributions only; update statistics medium for table <table> (<columns>); Thanks, Andrew