Royal and grand fire attunement are the most beneficial since rings are the only way you can get skill points for attunement and they impact both your DPS spells.
After that you should prioritise fire bolt and then fire storm.
true that attunement skill points can only be obtained from rings and attune impacts both fire spells. however, the increase in damage given by firebolt and firestorm rings at his current level outweighs the increase given by attune rings. as i stated, prioritize bolt and storm to 50 and then worry about getting attune past your skill cap. if you have nothing else to use, attune works; however, the bolt and storm rings will increase your damage more so at your level. attune rings really come into play past 180.
your skill setup should be as follows:
bolt and storm- as high as you can get it (maxed in terms of skill, plus using grand and royal rings)
attune- maxed (your current skill cap, don't use rings unless you have nothing else, attune rings better at 180 when you have bolt and storm maxed at 50)
lure- at least half maxed
eshield- extra survivability