After doing some digging and reading the manual I can get away with the onboard 4 channel decoding of SPI (My old Hantek DSO5102P series Scope only had 2 Channels) , as you guys have stated I don't need to use the LA interface for what I am doing. This means I don't need to buy the PLA2216.
I have ordered the DHO914S so I always have the option in the future of using the LA if I need more logic channels and the onboard AFG means I can save some more desk real estate.
I suspect I can hack it to 250MHz like I hacked the Hantek to 200MHz.
This unit is perfect I can connect it to my microscope monitor via HDMI as well for my failing eyesight
Thanks for all your help .... really appreciated ... its going to be a revelation to have a decent scope ....the Hantek barley got me by :-)