[Newbie] Looking for autoflowering feminised lowryder seeds

Hi, here are my thoughts:

1 - be very low (lowryders for example. are there any lower, anyway?)

I don't think lowryders grow shorter than other plants because the height of your plant will depend on the conditions and treatment you give it. Maybe I'm wrong and they do, hence the name but I think the only diference with them is that they auto-flower.
If you want short plants then you need to prune them correctly with Low Stress Training, and/or Topping.

2 - be feminized

If you need feminized seeds then you need to find a reputable seed company and spend a lot of money on what usually turns into hermaphrodite plants because feminzed seeds only come from hermaphrodite plants.
It would be much better for you in the long run to buy normal seeds and sex them yourself.

3 - be autoflowering

Rhuderalis Skunk is highly recommended as a quality auto flowerer but it is nowhere near as potent as many quality strains that you flower yourself. Why do you need an auto?
Its very easy to flower it yourself when you want it to and this way it will be you that decides the optimum time for height and quality.

4 - produce at least 50 grams per plant

Most strains will achieve this if grown in optimal conditions.

5 - have high level of THC

Most quality strains will get you ripped if grown well. But you need to decide what kind of ripped you like. Sativa or Indica.

6 - As I'm new to this I would appreciate any help in term of suggesting specific NAMES.

There are too many to choose from! Once you decide 5, it will narrow this down.

Hope this helps for strarters. :)