Simple answer is yes you can use a turnstile and quite a few (including me) do use them. I have a VHF and UHF set of GS’s, just like what you are thinking about but the difference is I have a nice (Wimo) turnstile for the VHF and an el cheapo UHF (eBay - none to link to but they appear every now and again. If the TA-1 is a bit expensive then I started with the AMSAT Funcube antenna.
I think the cheaper ones are from a similar source and stanislavpalo130 on eBay is a good source of reasonable antennas
Hope this helps (you’re bound to get a bunch of other opinions too 
Alex