my opinions on your positions, feel free to disagree (;
Face of the mountain + ruby sightstone: its not bad, but its a later power spike.
the power of 4th ward charge earlier is extremely valuable for vision control. it allows you to have 2 rotations of wards each back, as against good players often times you will be fighting over vision control, the higher you climb the more powerful that 4th charge becomes. so delaying this for a 10% shield, + CDR on actives isnt worth in my opinion in a majority of situations- though certainly viable in some.
yes; grabbing a situational item prior to locket is generally a strong idea.
my layout just sais Core, as in almost every game youre buying those items @ somepoint.
i 100% agree, early righteous glory is extremely effective, as a frozen heart, thornmail or mikaels can certainly be.
Runes:
Botlane is all about flat stats. people constantly trading autos and such.
in the words of much better players than me, "there is no more efficient stat from seals, than flat HP".
this is because each health rune provides more mitigation than an armor seal.
if im not mistaken, scaling health becomes equal to flat health runes @ lv 7. that means level 1-6 the harass you take is going to be more serious. if youre playing the role correctly, youre not just behind your adc while she farms.
youre positioning in trading stance looking for favorable all-ins, youre body blocking skillshots that would otherwise hit the adc.
-cait Q does less per unit it passes through, tank it.- additionally when your adc goes to last hit/you go to proc relic shield
the enemy ADC and support [if they have a clue] are going to be positioned in trading stance, so if you are sitting behind your carry they get to chunk him out for free when he last hits. but if youre an alistar, up there with your carry, they need to be careful of using trading stance in fear of an all-in.
as for CDR runes/they are viable. but against a mage support youre going to want flat MR,
when the enemy botlane has no ap [ashe + braum] CDR is an option; i just prefer SMR in that situation, or even flat IF the enemy midlaner is both AP + has serious roam potential against my mid laner. or if the enemy jungle is something like an elise/gragas. early game powerful ganks.
I hope my explanations help you out (;