As an update the remote starter unit has given me no trouble so far. Granted the remote start feature is only used in the winter. The door locks are also finally connected the only issue I have had is loose wiring in my door panel where I spliced in the door locks. After slamming the door the remote unlock feature would intermittently work. This has since been remediated by soldering the door connections just like the remote start connections installed earlier. As for the spare button in the remote It has not been connected to anything, still debating what I want that to do.
For people looking for a remote start/lock feature id recommend purchasing something aftermarket with the relays built in vs installing OEM. This way you can wire the unit in neatly (if you take your time) and don't have to worry about determining the RF code for the remote. Granted its a bit of a challenge to get it set up, if done correctly you will be glad you did it. I am yet to see an install go wrong but im sure it happens.