Hello @Jay_Rogan,
Connecting boosters/repeaters have been addressed many times before in the form, you can see a selection on this here in the previous post.
You may like to ask your local authorised Peplink Partner for a copy of the Antenna Selection Guide available to them from the Partner section of this Forum.
Your local Certified Peplink Partner can help you with a copy of the Antenna Selection Guide for Peplink Partners , this is a detailed guide and is only available to the Peplink Partners so to ensure that you are helped in working through it to get the most suitable antenna solution to your application.
Happy to Help,
Marcus 