ok,
in regards to the "bank" question
1) if you arent going to be substantially bigger than rest of kd, and most of wol, you cant be an affective bank prov (in the traditional sense of the word)
2) if you want to be around the same size as everyone else in kd (or ~20-25% bigger than next biggest prov), and be able to fund/kill dragons by yourself, killing, wont happen... but i would say go DE, so you can ToG all the income you need =)
to become a slayer, i would say you need to be at least 2x the size of next biggest prov in kd...
as to vines, go away...