@Ishlilien, you can comfortably solo the first belt with all trinkets proc'ing and Stampede+BW (I also have a few secs of pre-pot and Bloodlust), just make sure you don't touch the boss before you get up there
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I was really frustrated with my pet for a long time until I read someone say to put your pet on passive and it comes back to you on the belt if you do the Disengage trick (the pet never bugs out doing the pipe thing regularly). What you need to do is this, once you get back on the main platform, send your pet on the boss, then do the Disengage thing, once you're on the belt, hit the bind or macro or whatnot that sets your pet to passive (I just have a macro for /petpassive). Of course this just means you have to remember to set your pet to attack and stuff later on lol.