Deployment of a scalable wordpress site

Hello. About this post:https://www.digitalocean.com/community/tutorials/automating-the-deployment-of-a-scalable-wordpress-site Although it is outdated, this is the most complete guide on the WordPress scaling that I see is recommend in this forum. Can I have a simple setup without so many nodes and then scale? Is there a best way or starting point to create a simple infrastructure and then scale if necessary? I am thinking about the following configuration:

1x DO Database Managed 1vCPU-2GB + 1 failover node 2x Webservers Nginx 1vCPU-2GB 1x GlusterFS with 2 nodes(1vCPU-1GB) with replica 1x DO Load Balancing 1x Droplet 1vCPU 1GB for Redis to handler PHP sessions 1x Elastic Search Server(it is additional for improve the searches)

Digital Ocen Firewall(I’m not sure how to configure it on this infrastructure though.) Things I might use: Spaces Object Storage Spaces CDN

We do not expect to receive a lot of traffic at the beginning although this could grow over time.

I would like to know if I am overdoing it with this initial infrastructure, or if there is a simpler, but equally scalable starting point.

Thanks