Thanks guys for your prompt reply.
I will be purchasing HEQ5 Pro so im sure weight will be fine for that. The F9 ratio might be a bit of a problem though, how much more demanding will it be?
Bintel are selling ED102 (can see here
https://www.bintelshop.com.au/Product.aspx?ID=7847 ) and has a focal ratio of f7
It is expensive no doubt though
