I currently only have a single yongnuo 600ex flash and its trigger. Im in china so both yongnuo and godox are a bit cheaper than stateside. And im getting the bug to expand into flash photography. The only caveat is that I would very much prefer to move to sony in the future for 2main reasons (ie the a7r2 or a7r3) 1.the higher pixel count and 2. the better dynamic range. I mostly only shoot portraits and would probably prefer to shoot outside more than inside. Im also just learning so I think a pair of led lights would really help out as I begin to understand lighting and can see what is going on. And its fairly cheap as well.
Another thought is buying strobes that I can take on location. Am i correct in thinking that if i do switch systems that monolights would be able to also accompany the switch?
Anyways if you were starting out today what would you recommend?

I have Einstein which has more power than XPLOR600 and I still can't beat sun unless we talking high performance reflectors like

