Best farming range for walls upgrade at Town Hall 8?

I have completely maxed out my Town Hall 8 including all teslas, traps and troops etc. except the walls which are more than half level 6.. So basically, I have no need for elixir and DE & I just want to upgrade my walls to minimum level 7 before upgrading the Town Hall as TH9 looks stupid with mostly level 6 walls.. In what trophy range can I find most gold to upgrade my walls? PS- I usually BARCH with 4-5 wallbreakers or BAM with level 4 minions. :confused::confused:
Currently, I am in Gold 1 and seriously, I am finding no gold -_-
EDIT - Hey robbinS, farming in 1900-2100 at TH8? Wouldn't I get raided all the time by TH9s up there?

personaly, I'm farming between 1900-2100 trophy range.

Also another tip I give u:

Get those walls to lvl 8 or u will have such a long grind at TH9 with those walls.

Or at least get all lvl 7 and get the core (maybe some compartments) to lvl 8.

Good luck mate:)