I've run it this high before, it's no big deal. I'm 9 days in and up to 254 pounds from 241.
Last time I did a similar cycle, I was asked "are you on steroids?" about 5 times the last week of my cycle. I guess that's kinda an unwanted side. Esp because it happend a few times at work and I have a really professional job. One of the guys who called me out was a brain surgeon and another was a general surgeon.
No physical sides except I'm sleepy all the time, I wake up a lot at night, piss more often, thirsty, and I want to hump everything with legs, more muscle and less fat.