well max sleep, probably add 1 for soul depuration for when mystics totems dont do their job. an instant cast lesser heal is a must.
party buffs are really up to you. many raids will only include a tempest that knows seal of accel at least but for solo grinding and what now, the benefit isnt as great since it doesnt last that long compared to cast time required.
blessing of haste is more useful than weapon of god for melee. the dna for WoG isnt actually that necessary (and hardly any melee will notice if you have it or not).
divine protection is gear dependent as the defense gain is marginal but sometimes useful if you really are too squishy. its not a priority.
other dna can all be used to pump your aoe attacks.
things like instant moving are useless for pve. godly mirror is useless for pve as well as physical damage received is either going to be negligible or going to kill you first.
thats about it. tempests are fairly straightforward. its just the party buffs you need to be wary of. i havent played tempest in a while so i'm hoping someone else can be clearer on them.