Dont worry about getting an FMIC too much as the LCR has 2 side mounted intercoolers rather than the one of the cupra so it makes less of a diff. Especially as it's not going to be very warm till the summer!
Dyanatwist ~£200 inc postage (badger5)
I'd get a full system (turbo back) as i still dont see the point of cat backs £425-500 depending on the wind (blueflame) + some fitting. Blueflame will offer to fit it for you for not a lot (free sometimes!). I'd go somewhere else as there customer
service aint great.
Upper strut brace £50 from an audi
dealer and you can fit yourself. I've got an aluminium one from aat as it's 1/3rd the weight and looks nicer.
ARB's are surprisingly expensive as only neuspeed ones seem to fit without clonking the exhaust. I got mine from awesome i think. But i'd go coilovers first if doing it again as this is enough for most, and i bet some koni fsd's arent too far off the price either if you dont want the lowering or adjustment. If you insist on arb's i'd go 25 rear and 23 front.
I'd also get a short shifter and a boost gauge. as there quite cheap and very effective.
As for order
1. s.shift (fit yourself)
2. boost gauge so you can see if you knacker something fitting
3. dynatwist (fit yourself)
4. strut brace (fit yourself) (i did this last as i didnt think it would do nowt, but it did!)
5. suspension of some description or an exhaust and get revo stg 2 depending how happy you are with the handling.