Are relayd and httpd my future buddy?

I have been using a combination of Apache, mod_proxy and letsencrypt to set
up different loadbalancing/https offload solution like this:

https://URL1 [Apache http_1]
---|
https://URL2 [Apache https, mod_proxy, and letsencrypt] --- [Apache http_2}
---|-- SQL
https://URL3 [Apache http_3]
---|

Of coarse running on OpenBSD

The URLS are typically sharing one IP and in theory the https offload could
also be load balanced.

Even though the above setup works, I would like to use as much of obsd base
as possible and less packages. Thinking of httpd, letsencrypt and relayd -
but can it accomplish my goals about sharing IPs, loadbalancing while also
doing SSL offload? Or do I need to stick with Apache or maybe look at
another solution like haproxy?

If I can use relayd for this, could someone please share a relayd.conf
example for me?

Regards, Lars.