Hey man, yeah the lower tier included the standalone versions and the full package gives you access to those + the increasing number of options. The options are there for you to refine and tweak many elements of the gameplay but are not necessary to get a full mod.
To be clear too, this first version is very much still in development. There are massive areas of gameplay which are untouched completely or largely untouched at this stage. This first release is largely about establishing the base to move into more complex areas.
I'm building this entirely from the ground up - so just be sure to read the 'TEST V1 Details' pdf for more information about what's included and what's to come!