Okay, so, after some more searching I solved my problem:
Bitlocker does allow you to use an actual password (but they call it a PIN) - can't be more than 20 characters, but that's still pretty good.
RUN > gpedit.msc
Select: Administrative Templates > Windows Components > Bitlocker Drive Encryption > Operating System Drives
Double click "Require additional authentication at startup"
Select ENABLE at the top
Under "Configure TPM and Startup PIN" drop-down menu, select "Require Startup PIN with TPM" > Click Okay
Double click "Allow Enhanced PINs for Startup"
Select "Enabled" > Click Okay
Run CMD as an Administrator
Enter: manage-bde -protectors -add c: tp
*Change C to whatever the drive letter your system drive is
Now, enter the password you want, can be letters, numbers, symbols, uppercase, lowercase, etc. 20 characters max.
This worked for me and now I'm happy to be secured behind a 20 character actual password and not just 20 numbers.
This data should really be more available from Windows to make it more user-friendly, so hopefully this helps you.