Ram VST issues

Hi all, my fiancé got me a standard iMac and MacBook Air just cause she's awesome, so before that guy try's to tell me that what I have isn't enough, I'm not able to upgrade because I am still learning and haven't gotten my foot in the door yet I have free projects that are offering me work that's it. they only run 8 gigs of RAM, and I need to get something usable for small projects orchestral wise whether it's garrison or whatever I can't spend more than like 400 at the ABSOLUTE most and even still I don't want to spend more than 200-300...are there ANY decent libraries that 8 gigs can handle...I'm not trying to sound like a butthole but everywhere I look people act like you have to spend 1000 dollars to have anything worth using, and all of them apparently require 200 gigs it's frustrating, I'm sorry but I am new any advice?

https://www.projectsam.com/Products/Essentials-Series/1406

Either Orchestral Essentials 1 or go with Albion 1 by Spitfire (Bit more expensive but newer).  

If RAM usage is an issue, maybe export certain tracks that are finished and import into a new session. Much less taxing that way.
Working in 48k instead of 96k sessions can help too, and closing any apps you don't need, particularly web browsers, they can take up like 1 gig of RAM usage.