Surly cross check Single speed

So a while back last year I was looking for a thrash about cyclocross bike to dip my toes into the mud, I came across a cross check frame on this forum and snatched it up. It was in pretty shabby condition, had barely any decals on it (most had been painted over) and the head badge had been brutalised, but it was still a surly cross check and was strangely unused. It spent its early life built up with cheap components and stuff from the parts bin.
http://i1218.photobucket.com/albums/dd401/thegiantpeanut/DSCF0264.jpg
This was fairly fun but soon the stuff on it started to die and it became less and less used.

So, in search of an excuse to buy more shiny things I have decided to make it into a well specced sscx bike, used for long rides on road and occasionally cyclocross and offroad stuff. The idea being that one good bike that does two jobs is better than two crap bikes (current status) that do a job each.
So began the strip and I searched for a nicer stem and spacer setup.
http://i1218.photobucket.com/albums/dd401/thegiantpeanut/IMG_0476.jpg

http://i1218.photobucket.com/albums/dd401/thegiantpeanut/AFADE2E9-A609-4CD9-93C1-1CA5735C86FC-1261-0000022964E70C74.jpg

The plan is to build this up with decent components, so these are on their way:
http://images.productserve.com/preview/2698/104376513.jpg
This was fairly cheap on sale and I though it would look a bit pro
https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcRSAVMKcCPpoB2ln-xFRZ1ty6P0wq9M4H7U5aKq2kgqaWaURSsN
Getting this second hand for cheap and have a gxp bottom bracket (shimano should fit sram cranks?)

Other parts I have from the origional build, brakes, bars (not the ones pictured, they are shit, have some compact ones) and other fiddly bits, so mostly just drivetrain.

So the issue I have now is wheels, this is something I need help with. I am on a fairly tight budget and only really want to spend about £150 on wheels.** I need some tough single speed wheels with 130mm rear hubs that are light enough for road use but can take a beating and a soaking. **
Here are my option

• Get some cheap ones off ebay that would work and have worked for me before.
  
• Get the shop to build some (what hubs, rims would I need? Where can i get stuff like this for cheap?)
  
• Use ss conversion kit on road wheels, this may defeat the point of single speed, but would be cheap as I have lots of road wheels.
  
• Get some 120mm ones and make/buy some spacer, this could throw chainline off especially as I plan to use a road crankset with single ring and I am not fond of putting the ring on the inside, looks gash.
  
  

To help the skimmers, the questions are in bold. Hopefully this build doesn't fall apart and I hope to keep you updated.