Hey Beebad...as mentioned, the tracks are most all boards are standard so the SS will fit most any board.
There's a fair amount to consider for boards and wings. If you are 170lbs, you should look at something in the 100L to 120L range.
The recommend about 20-40L over your weight in KG.
You're 77KG.
For a front wing, the space skate is meant for kiting where you don't need much lift to get going and it's not super small at 1500, but just not designed for winging.
It will work if you are really good and in stronger winds, but you will struggle if you are learning.
I carry Armstrong and Slingshot and something in the 1800 give or take a little will be much much better. The HS 1850 Armstrong is one of he better ones for wing foiling. Not too high aspect and just a great wing. If looking at SS, the Infinity 84cm will work well with your current set up and add a 48 tail.
One other thing to consider....the more athletic, flexible and young you are the more you can go with smaller boards, wings, etc.
Hope this helps and let me know if I can help in any way. I sell a lot of winging gear and still have a good selection, including the new Phantasm's by Slingshot.
Bob
www.kiteridersllc.com