You might be surprised what a Test only cycle can do for you. In my opinion, there's no need to use other compounds (besides maybe an oral for a few weeks) in your first cycle.
Depending on where you are currently at, it isn't unreasonable to add 10-15 lbs of LBM over a 12 week cycle. Adding in Tren isn't going to bump that 10-15 up to 15-25 lbs of LBM. On the other hand, if you were already a lean 225 lb'er, a cycle of just Test at 500/week isn't going to put a ton of size on you, so upping doses and adding new compounds will help you go from a 5 lb gain to maybe 10 lb gain for an experienced AAS user.
Tren is a totally different ballgame than just testosterone. The pros outweigh the cons for the guys who are several cycles in and need something else to get the growth, but for a first cycle, I'm not sure the pros of a couple(?) extra lbs of LBM outweigh the extra side effects and possibly harder shutdown.
That being said, Test+Tren is a tried and true cycle, you'll probably get slightly better results than test only, but I don't think the marginal increase in gains is worth it for a first cycle. Just my .02