Hi Marcus
Welcome to the forum and back to fly fishing.
"Artistic side of angling"? Wait 'till you've tried chucking some huge piece of overdressed fluff into a howling gale on a reservoir
Before anybody can give you some advice on tackle, they will need to know.
What you are fishing for.
Your budget
What sort of fishing you are planning on doing. You mention rivers. Are you just interested in rivers or are you planning on fishing stillwaters and reservoirs?
So what went wrong last time you tried it?
One piece of advice you will probably get is to set some of your budget aside for casting lessons - preferably from a qualified pro. It's money well spent IMO.