Can I use this plugin for my requirements?

Hi,

#1 goes without saying
#2 #3 and #5 would require a customized integration that captures a form submission via Gravity Forms and records a referral depending on your specific considerations
#4 depends on the extent that you would require; the system includes stats in the dashboard, see e.g. https://docs.itthinx.com/document/affiliates/shortcodes/dashboard/affiliates_dashboard_overview/
#6 every plugin you add to a site will consume a certain amount of resources; the system is well designed for that purpose but you should assure that you running it within an appropriate environment

If you want to base your affiliate program on this system, with the appropriate development work that covers the parts as mentioned above, it can be suitable. You might also want to have a look at our premium versions, as they come with an integration for Gravity Forms https://docs.itthinx.com/document/affiliates-pro/setup/settings/integrations/gravity-forms/ that you could leverage along with Formula-based Rates https://docs.itthinx.com/document/affiliates-pro/rates/ which are not supported in the free version we’re looking at here.

Also, if you want to consider the form plugin alternatives to Gravity Forms that are supported with the free version, you can see them under https://docs.itthinx.com/document/affiliates/setup/settings/integrations/

Cheers