If you want to be able to do it for far less than $1100
1: Compile a list of part numbers on world of triumph
2: Scour ebay for said parts
3: if there are a couple of parts you cant find order them new
You are very likely to find everything on ebay, including the classic/touring foot control engine rails, the boards, the new shift lever, brake lever, shift linkage and rear brake line if it's required.
There is also a floor board conversion that someone recently posted made in michigan for the roadster. Cost was under $300 and they looked very nice, could be had in black or chrome. It wont give you forward controls, but it'll give you boards at least.
Then there's the rivcos, or the goldwing highway pegs you can mount up the the stock rails and have forward foot rests without engine crash bars. Lets you retain pegs for corner carving and have feet forward and up position to rest in.
Just different options to tackle the new foot position issue.