No, u can't. With trial u have acces to all zones but u wont be able to level up above 85 and one experiance point to 86. (almost full bars of 85lvl)
Very doubtful, you'll need a 90 to effectively farm zones and you'll have a lot of competition (which would be geared 90s) for whatever you're farming. If you're planning on using GB2 it's pointless since you don't unlock flying until you're 90. If you're planning on farming 90 dungeons it'll be impossible on an 85.
You need mop expansion to do this, also since no flying you wont get far. But if you got blood dk lvl 85, and expansion you might grind some trash in jade forest or 4 winds, imo this pointless tho.
Technically you can if you activate the 10 day MoP trial. What i did was the following: i activated the 10 day trial. I used Kicks Jade Forest profile to do all the quests in jadeforest. After that you cant continue as it will bring you to VotFW and you need to be 86 to accept quests there. You will however have collected some nice gear while you was questing. I had no trouble fighting mobs in Jade forest or VotFW. So if you are after herbs and GI ore, you will be able to collect that in mentioned zones atleast, although you will be farming with groundmount. You can even tick the option to collect herbs and mines in the settings so you will be collecting those while questing in Jade Forest.
