The great thing is that any extras fitted you can ditch and sell
That particular bike has an accessory seat worth about £150, Rack £40, Pannier Rails £30. Even the OE speedo & revcounter are worth about £300 so you could swap them out fir a neat little chromed speedo etc
Get rid of all the OE shite and make yourself a nice little bike and there are some great sites about for 'borrowing' ideas from
http://motochimp.blogspot.co.uk/
http://www.britishracer.com/
http://britishbikebits.com/
http://www.dimecitycycles.com/
And a nice link here about taking a Scrambler and building a Desert Sled
http://motochimp.blogspot.co.uk/p/in-shed.html