Thank you Brian (sum of all parts) for this information. I'm still thinking about the a7ii and will get round to asking my local Jessops store in Bath (about 15 miles away) to get one in for me to look at/handle. I may even ask if they will do a 'rental' on it as well. That's just an idea at the moment, I'm being kept quite busy in a number of areas and finding the time to get this in place is hard to find at the moment.
My line up of lenses are made up of Minolta and Sony.
Minolta are: 500 f8 Af Mirror, 70-210 f4 'beer can', 50 f1.7, 100 f2.8, 135 f2.8 maxxum, 28-105 f3.5/4.5
Sony are: 70-300G f4.5/5.6, 70-400G f4/5.6, 16-50 f2.8 (with the a77[ii]), 30 f2.8 SAM, the DT 55-200 f4/5.6,
I've also got a couple of Sigma lenses: 85 f1.4, 105 f2.8 and a 135-400 f4.5/5.6... and Tamron: 17-50 f2.8 XR LD, 28-300 3.5/6.3 XR Di and 10-24 3.5/4.5 SP Di
Still considering the options that may come through from Sony. Unsure about 'having' to use an adapter - will Sony use the 3-5 axis in an new "Alpha" mount... a99ii???