Glad to hear it! Starts with rare species is disabled so that you have to search for them to breed the special combos/subspecies, but if you want to enable a specific one here's how:
1) Open your Strive main game folder and navigate to \files\scripts\characters\races.gd
2) Open races.gd in Notepad++ or whatever you have to open text files
3) Ctrl+f and search for the race you want (eg. Harpy)
4) After "Harpy = {" there'll be a line that says "startingrace = false," Just change that false to true and save races.gd
5) Start a new game and Harpy will now be available from the beginning
be extra careful not to add/delete any tabs or spaces while you're in races.gd or the whole game might crash instead when you try to play
