Tax credits normally brings tax down to around 1-1.25% depending how the dealer does it so tax would be around $1k depending on dealer add ons.
You posted about a 2020 HST yesterday. If you’re flexible in the trim you want I’d target older stock via cargurus.com and send them the breakdown of the deal you want. Asking for quotes especially in Texas with Land Rover dealers is going to be painful. I’d contact the Internet Sales person and give them the numbers that you’ve calculated are realistic.