Based from your plan, overriding these settings' default may be needed:

• "txindex" will enable some features of RPC commands like getrawtransaction which aren't available to nodes without a full transaction index.
  Enabling it before the "Initial Block Download" will make sure that the database is built while syncing, that could take hours if enabled later.
• "maxmempool" will set your node's mempool size from the default 300MB to your preferred size.
  This is useful to your user-case to be able to keep most of the unconfirmed transactions since the default isn't enough during "peak" seasons.

You may also increase your node's database cache with dbcache=<size in megabytes> for it to utilize more of your memory.