Should be good, but a little bit of packed maybe?
Depends where do you want to go.

Food trip will be all around the island. I'm not very good in food around the island.
I brought my friends to the places around Butterworth for food. Less tourists, and that's the thing we ate most of the times.

Heritage with murals around - u can do this for evening, when the sun goes down.
Museums around heritage area - u can do this during the sun shining very strongly, as this is indoor and air conditioned.

Bukit Bendera & Kek Lok Si is nearby. So you could do these 2 together. Recommend to go Bukit Bendera early in the morning. The breeze could be cooling sometimes, which I like it.

Batu Feringghi if you would like to relax by the beach.
Teluk Bahang National Park - it's less touristy. This is for those who love nature and go for hiking.
ESCAPE - For those who loves adventure.

You could do cafe hopping as well as bar hopping if you are into those lifestyle.