Making a HealthBuff LUA with Conditional Poping.

Ok I don't know if this will work the way I have coded it so I'm here asking if this will do what it says it will do.

local buffed=0
if UnitExists("player") and not UnitIsFriend("player", "target") and not (UnitIsDead("player")) then
    health = GetHealth("player") if (health > 99,75,65,50,40,32,15,1) then
--[[                Evasion,Cloak of Shadows,Smoke Bomb,Lifeblood,
        local idBuffs={31224,76577,121279}
        local idPreparation=14185
        local spellname=GetSpellInfo(idPreparation)
        local start, duration, enabled = GetSpellCooldown(spellname)
        if (enabled==1) then
            for i=1, 4 do
                if (IsPlayerSpell(idHealthBuffs)) then
                    local start, duration, enabled = GetSpellCooldown(idHealthBuffs)
                    if (duration==0) then
                        local spellname=GetSpellInfo(idHealthBuffs)
                        CastSpellByName(spellname)
                        print("buff: "..spellname)
                        buffed=buffed+1
                    end
                end
            end
            
        end

But if this code does not do what I'm trying to get it to do... is there a way to combine all the Life Saving Buffs to be used the way their tool tips mean them to be used. I want to conserve space in my fight classes Rotation list by combining all the Life saving buffs to pop at different health spots to make them work the best for my class.