We can't give you defiinite answers but can share our experiences with you. The journey are different for all of us. The Yashica GSN which I have a similar one is a good start. It is a fixed Lens RF. Sharp lens but may be bigger or heavier for some but solid. My first RF is a Olympus 35 RC cos is smaller and cost only about S$ 250. I was new to RF and coming from auto focusing world, I need to know whether I can get use to the way RF focus. I would have got the Yashica first if I know there is a aperture priority Fixed Lens RF.
I began to like it over the months and soon I got myself the Bessa R3A after a year and a half. I don't think there is such thing as a beginners RF. A Leica RF can be a beginners gear if you are willing to invest. Beginners gears usually means it will cost less in the way most perceive. :bsmilie:
If you like RF, the likely hood of you owning more than one RF over the months or years is probable.

You have to decide which one you will buy first. I started of with S$ 250. what will be yours ? But if you can only have one, is a tough one..... I will also say go with Bessa for now.
Plenty of RF resources in the internet. Read it up and you will find the answers that you like.
Good luck.
I noticed you are selling a Yashica MG1, not bad also le!.....