Best Places to get your gear. Run SV, if anything getting revered gets your ring from CE.
Run SH its heaven and glory to tank and pickup the FoC trinket.
Run Tempest Keep instances Mech, BoT, Arc as each have gear you need for tanking if anything the reps for Shat’ar which you would need for exalted rep gear.
Run Black Morass a few times for KoT reps to get TW leggings and rep spell blade. BM is fun to do. But of course if your already doing BG’s you can get the S1 or S2 gravel mace which is awesome as an alternate for the spell damage.

That’s it in a nutshell for gearing a Protect Paladin properly at 70 from 5 mans. Sadly dry people take any pride to do it properly while getting solid tanking experience. Non of that is hard for someone or anyone in a guild with enough people at 70. Afterall I did it being guildless so nobody has a worthwhile excuse if they are in a guild.