You quoted a post with the keyword 'golf swing dick slap' when you asked me so my immediate reaction was far from taking it seriously.
That's a loaded question right there. First up how long will it take you to convert? I've no idea. It depends on a whole lot of things from the intent of the search and how familiar you are with converting cold traffic. For some like the product based Amazon ones it really could be fairly quick if they're looking to buy and you put a list in front of them. Others might take some practice.
As an example - the keywords I'm using for this journal have no buyer intent. They're focused on a niche but the lead I had yesterday netted me about $10 after they went through a funnel to convince them to buy.
For the speed of ranking - it's even tougher to say.
The original journal I ran with KGR was with pretty blank domains and they ranked quickly. I obviously can't promise immediate day #1 rankings but I can honestly say this is the fastest version of SEO I've ever seen. Google clearly treats low volume keywords differently and I like the combination of focused keywords with faster ranks.
Of the top of my head, I don't remember how quickly the first ones ranked. I'm pretty sure a bunch of them indexed around page 2/3
way quicker than I'd expected. Some then moved up to #1 where they still sit today.
Some of the keywords for this journal ranked on the first page in under 2 days and have brought traffic to my lander already. It's pretty insane for SEO. Keep in mind this journal is on parasite pages but I'm also doing pretty short-form content and a lot of it isn't unique. If I threw some links at it and wrote more content it'd probably rank better - but I'm going for scalable here.