DIY is always dependent on the skills of the Y--everything is DIY if the Y is up to the challenge.
How much DIY are you going to attempt to tackle? Build up the tow-bar from scratch? or simply install it yourself? (I have no experience in either so can't offer any advice there.)
As far as your other question: Yup the V-10 is more than up to the challenge, but its more than that: transmission and rear-axle gearing also come into play (note that the V-10 is in coaches much larger and heavier than yours and those people pull a toad, up hill, both ways).
If you really are concerned about the V-10 and want a bit more power there is always a
5-Star tune it will get you some extra grunt. Then Banks headers, etc. etc.