The tamron will be a good step up from the kit lens and will more than meet your expectations.
When manually focusing tge ring doea feel loose but i wouldn't call it a deal breaker.
The tamron is one of the sharpest lens in that price range.
I love mine and think it is ideal when you are on a budget.
One think to note, the tamron is slightly noiser than the canon kit lens when focusing, again though it isn't a major thing. It would lead you to believe that focusing is slow, but its actually contrary to that with lock on being pretty quick unless in extreme low light.