I'm not sure what people averaging with the different last layers, but what is really key to good times is your f2l. With a decent f2l, I could average around 25-30 seconds with a 4 look, and i averaged around 23 second with 3 look, now with partial 2 look, i average around 18 seconds.
I've said it before, and I will continue to say it. With any decent beginners method, you should be able to average sub 45, or even 35. Keep practicing with your current method, learn intuitive f2l, then a 3 look with Pll, then Oll.
impressing people was fun at first, now i hate the attention. I always get asked the same questions and I am repeatably doubted in my skills. I have actually lied and told people I cant' solve it to avoid the attention.
I don't know about your recommendation to learn full fridrich Av. I didn't learn any keyhole ever. I jumped straight from beginners method, to beginners method plus 3 look, to Intuitive f2l + 3 look and that's where I am now, except i know a good 50+ Oll.