Orivs 3 wt TLS rod

On my last businesss trip I passed an Oriv shop with equipment at deep
discount. I have not done any fly fishing for over 15 years and was
never very good at it either. I decided to pick it up again so
checked out the Orvis stuff. The salesmen sold me a 8 1/2 ft 3wt TLS
for $130 and an CFO 123 reel for $90, which seemed like a good deal.
However, after reading many of the posts here, I am beginning to think
I should have gotten a 5 wt rod as my only rod. I told the salesman
that I usually just fish in the eastern Sierra and catch trout less
than 2 lbs. Should I return the rod? Thanks