Stanky you need to get a better faction if you want to increase stats quickly

that will give you more bonus from units and more units from WD that always help I get a big jump in stats after every WD

Also a higher faction will rank top 100 in FvsF so more unit for your

Their bonus will help you kill a few more boss.

its a lot of small thing but 10 more gold unit a month with 2-3 more bonus unit will help a lot to climb in stats.

Also consider spending gold only on event that gives low to none XP!