I have heard that integrating a payment gateway is a lengthy, and time-consuming process. Will StoreHippo help me out with this?

StoreHippo supports major domestic and International payment gateways and helps you in the setup.  

For more information on the topic, go to the links below:

Supported Payment Gateways
https://help.storehippo.com/topic/supported-payment-gateways

Setting up Payment Methods.
https://help.storehippo.com/topic/setup-payment-methods