As far as what else you want to do, ask yourself some questions.
-Are you doing 25 man and are the other healers in your raid having mana problems/don't have the legendary meta? In that case, stacking to maximum Spirit is probably the best idea.
-Is Healing Rain 25%+ of your output on the average fight? If so, you gain a lot by stacking to the 7613 haste breakpoint as soon as possible.
-Are you having significant mana issues based on playstyle, gear level, or spell selection? If so, and you don't want to switch spell selection around/mess with Totemic Recall, you can consider going with a low haste level and Spirit > Crit > Haste > Mastery. The extra Crit means more resurgence regen.
-If you're doing 10 man (probably not recommended in 25 due to MTT gains for the whole raid), you can consider going to a low (sub 10,000) Spirit build and emphasizing recalling every HST and dropping and recalling Magma totems during meta procs.
I personally don't advise putting much value in haste breakpoints except for Healing Rain. The totem breakpoints are buggy, ELW is a fairly negligible source of your output typically. Riptide rarely exceeds 15% of your output, so you are only looking at a 1-2% increase from hitting a Riptide breakpoint. Unless you are close to an ELW/RT breakpoint from basic gearing, I don't advise going out of your way to get to one. You generally gain less throughput than the Spirit/Crit/Mastery you would drop to get there gives you.