I am planning to create and play with stamina DK as a tank in PVP

If someone had played world of Warcraft, he/she would be familiar with the notion of ‘twink character’ (http://wowwiki.wikia.com/wiki/Twink) link

Such character will receive strong crafted sets, good food and all other tools to enhance its capabilities for PVP
In wow, you would keep such newly created character at a certain level which is below the cap level (in ESO, below 160CP i.e. non-vet campaign)

However, given the nature of ESO, it is difficult to make such a character because:
You cannot turn off your XP
This means that you cannot stay at a certain level and only then farm certain armor sets for them to be your level (level 49 being the most optimal to start farming)

So, my question is:
How can I make a character and equip him with BIS gear, while keeping him below level 50 so he can do non-vet campaigns
My initial plan was to gear him up with certain crafted sets (which is easy to do because you can craft all pieces for certain level) and Monster/dungeon/overworld or PVE zones sets e.g. Plague Doctor
My biggest concern is that for example if I want to farm certain Monster set or any other set dropped in dungeons, I will either overrun level or be induced to wear items that are lower my current level

Just to make it clearer:
I created my stam DK and levelled him to 40
Now, I want to start farming certain Monster / dungeon / PVE zone sets to gear him for non-vet campaign
I start farming for example the plague doctor set starting at level 40
By the time I reach level 45 I have farmed it, but half of plague doctor equipment is level 40 (since I started farming it at level 40) – first problem
Second problem is that I might simply not have enough ‘more levels’ before I reach level 50 & automatically be inherit all CP and become a vet character (not being able to enter non-vet campaign)

Does anyone have a ‘below cap level i.e. below level 50’ character with BIS gear such as Monster sets or sets dropped from dungeons?