click here have a network of people who will assess and advise. They also have a "bank" of equipment for short term loan so you can try before you buy - some of the kit is quite expensive. My advice would be to contact them first.
I have sent the links to my sister who is currently viewing all the peripherals,to see which will benefit him the most. I'm not sure what ones she has decided on,will contact her and find out. Thanks for asking