Do I really need a droplet with 1GB of RAM for OpenVPN?
I've joined DigitalOcean so I could setup a droplet with OpenVPN to secure my internet connections, both at home (on the router) and on-the-go (on my phone/laptop). For that, I'm following this guide: https://www.digitalocean.com/community/tutorials/3-ways-to-securely-browse-the-internet-with-openvpn-on-debian-8
But do I really need a machine with 1GB, won't 512MB suffice? I think it's kinda of expensive to pay $10/month for just this use case, I'd rather go with the cheapest option, but I'm afraid that 512MB won't be enough.
Is it possible to just configure everything on the 512MB option and later on - if I find it's not enough to accommodate my browsing needs (how will I know that?) - upgrade to a higher spec droplet?