To help manage the disk size you can prune the blocks being kept. For this I use prime numbers- pick your own in app.toml
pruning = "custom"
# These are applied if and only if the pruning strategy is custom.
pruning-keep-recent = "809"
pruning-keep-every = "0"
pruning-interval = "43"
You should also check what you are indexing
index-events = ["tx.hash", "tx.height"]
You should modify /etc/security/limits.conf and add
* soft nofile 65535
* hard nofile 65535
You can then modify the config.toml to increase connections. This may cost you more in ingress/egress charges.
max_open_connections = 1900
max_num_inbound_peers = 50
max_num_outbound_peers = 50