I do know that pickings for 6e are going to be fairly slim as of right now. Honestly, the reviews that I heard of the system aren't all that great. It sounds like they needed a bunch more R&D and decided to launch the product anyways. That is strictly hearsay from reviews on Youtube and podcasts from groups I tend to trust, but it is hearsay.
So, with that in mind, there is a ton of 5th and lower edition free PDF's available. 5th was far from a good edition either, but the literature is free and you can use OMAE v2 for character creation. So my suggestion is start with 5th edition and house rule the stuff you don't like. I would not use limits, for instance. Just let your players know right from the start that the system is far from perfect and you're going to adjust as you go. Our current d6 system for SR is quite a bit different than the 5th edition rule books, but it preserves the core SR stuff. If you need advice past that feel free to ask.