Try tracking down a 2nd hand z-axis, I use a 9 3wt that I built last year, works really well and will put out a good long line when needed so a good compromise if you are stepping down in weight.
If you are unlucky and have to pay duty I think it's 3.7% for fishing gear plus VAT (20%), you will also have to pay the RM or PF a daft over the top collection fee it ranges from £8 - £13 depending on service, the seller cannot really help with quoting for duty etc, best to have a word with him he could help out

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If you google duty calulator you should find a few pieces of software that will do the maths for you, good luck..
Regs, V