Based on the mark and the provided decals, looks like you are limited to building a UK based training vehicle. This is the initial production Valentine, and online sources state it was never sent out to any battle front due to problems created from a rush production:
http://tanknutdave.com/the-british-world-war-2-valentine-tank/
Looking at the decal options, 11th armoured would of upgraded to Shermans for the Normandy invasion. Before that, for three years the unit remained in the UK - wow!
The 6th armoured did participate in the North African landing, but would have been equipped with a later mark Valentine. They too would upgrade to Shermans later in the campaign (April '43).
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Although likely rare, you could possibly send it to North Africa, but photos do indicate they had sand shields (a dedicated PE set?).
You could possibly convert it to a Mark II, but most photos show a different pattern to the road wheels.
Might want to check out a comparison build of the Mark I & II currently going on here:
http://www.britmodeller.com/forums/index.php?/topic/234954703-valentine-mki-and-mkii-135-afv-club/
regards,
Jack