another fighter build question

[_ELMO_]

so im wanting a axe fighter for the damage, i already have a 1h sword/shield fighter for AoE and tanking, but i dont like the low damage, and rather have a axe.. now here are my questions

1: stats, should i put 25 into spr for the crits.. then go 2:1 ( str:end ) or go 2:1 str:end w/o putting 25 into spr, or just go 25 spr then all str?

2. because of the low defence and no block rate, would i even beable to tank or AoE at all?

3. if im only able to afford 1 stat gear, should it be end or the vita/def? or str for the dmg?

4. what skills should i put points into? i was planning on power hit ( dmg/sp ), but i dont know what else to put points into

thanks for everyone to helps