Stick to Central America or venture South? 3 months of travel

Myself and my partner plan on backpacking Central America next summer. We’re both teachers in Ireland, so we have the best part of three months to do it .

Any suggestions as to whether we should experience just Central America to the fullest or use our time to travel to South America too? I’m unsure of how to use our time and would be grateful for any insights.

I’m interested in knowing how feasible this is and whether the Central American rainy season would affect how we should navigate our travel.

Anyone who has done Central America, does 3 months sound like a lot of time or too much?

Thanks!

Stick to Central America or venture South? 3 months of travel