I would like to purchase a ColourSpace package to calibrate a LG CX and use with Davinci Resolve. I have a Datacolor Spyder5 and Calibrite ColorChecker Display Plus for probes. Would ColourSpace HTL be the right package and include everything I would like to do? On the product matrix, it shows HTP/HTX having hint option and more LUT adjustments beyond video scale, with HTX also having VCGT and ICC tools. Are these options I would need for CX/Resolve, or would HTL be enough?

For professional use, with systems such as Resolve, you will need to use one of the 'professional' licenses.
ColourSpace LTE being the minimum license level.

The Home Cinema licenses are for use with, well, Home Cinema applications - not grading setups with Resolve.
(They can be used with the LG TV and DeviceControl, but not Resolve.)

Steve