I've moved your question to a new thread, as its not nice to go off topic with someone else's help request.
You can have 13 and 16 on a single fixed dish, but only using thin style lnb's such as Alps. You also need a dish larger than 80cm, but 1 meter or above is better. You may also need to make your own lnb bracket as standard lnb holders will often be too big to get so close.
Not a lot has been discussed... yet
I basically wanna get 28 16 13 on one dish that can feed a dual tuner at first and then maybe 2 single tuners later.
My assumption was 1m dish (south of england) at 16 with 2 offset for 28 and 13.
(And maybe 19e at a later date too)
Any recommendations or extra advice would be great.