Unfortunately the demo will not work with the 675, but the PICkit1 will work with most any 14oin or 8pin PIC.
Demo version PIC® MCU support:

PIC12F683, 16F627(A), 16F628(A), 16F84(A), 16F688, 16F690, 16F87, 16F88, 16F870, 16F871, 16F872, 16F873(A), 16F874(A), 16F876(A), 16F877(A), 16F882, 16F883, 16F884, 16F886, 16F887
And the demo is limited to 31 lines of code.

Yes, try before you buy. That is what the demo is for.
In my opinion if you are going to stay with MCU programming, get the pro version.