@facecrawlx when I tested CAP’s Milkshake it was really good. You could even start smaller, and try just CAP’s Milkshake, with your TPA Strawberry Ripe, and INW Shisha SB with maybe a dash of TPA Dairy/Milk, and see how it fares …
Maybe I missed it but I don’t see ‘steep time’ mentioned anywhere. Beyond the already great advice given, how long you steep your mix is important so the flavors mature and come through more. Especially when working with creams and cheesecakes. As a rule I steep a minimum of 7 days for those types of recipes. Mix it, shake it up and put it away…shaking every couple of days til it’s ready.
Jungle Flavors Sweet Strawberry is kind of a syrupy flavoring similar to the Dairy Queen shake of old. You might want to try some of that along with CAP Milkshake to get a simple soft-serve shake recipe.