I recently brought a used 2012 Five, I had the choice of keeping two bikes with a few compromises or kit the Five out good and proper…I went for the 2nd option and very pleased. I runs it with 36’s, reverb, hope hoops XT brakes & renthal finishing kit, its awsome. Coming from a Charge Blender which is a 4X type frame and super fun I was worried it might be a little dull but its certainly not.
If I were you I’d sell the Boardman on eBay or the likes as they fetch a good price, its ‘the’ brand for no bikers, put it towards a good build, if you wait for the right deal £1500 should buy you a very nice 2011 maybe 2012 example, get your GF a basic bike 2nd for £100 or so, she probably won’t even tell the difference.
P.S I couldn’t bring myself to sell the Blender frame so soon to be built back up 🙂