attacking strategy to reach crystal

i have been using a mass giant wizard army with 18 giants 22 wizards 3 heals and the rest archers.
i am currently at 1713 trophies and looking to head up to crystal
it is a very strong army and i have been able to 2 star almost any th7 base but now i want to head to crystal but this army costs a lot of elixir (150k) so if any one has a better army composition please share and which costs a little less if possible also i have my BK level 5. thanks in advance

use barch to get 1 star on th7 and 2 on th6.it cost less and train in less time and good profit margin

i know barch is a great strategy but i have never been much successful in using it , i am unable to even 1 star most of the bases with it .but thanks for the advice i will try barch and see the results

reached crystal using 14 hogs 11giants 11 wizards and rest archers